[HN Gopher] Ask HN: Recommend a maths book for a teenager?
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       Ask HN: Recommend a maths book for a teenager?
        
       I'm looking for recommendations for a maths book for a bright,
       self-motivated child in their late teens who is into maths (mainly
       analysis) at upper high-school / early undergrad level.  It would
       be a birthday gift, so ideally something that is more than a plain
       textbook, but which also has depth, and maybe broadens their view
       of maths beyond analysis. I'm thinking something along the lines of
       _The Princeton Companion to Mathematics_ , Spivak's _Calculus_ , or
       Moor & Mertens _The Nature of Computation_.  What would you have
       appreciated having been given at that age?
        
       Author : andyjohnson0
       Score  : 142 points
       Date   : 2020-07-02 11:03 UTC (1 days ago)
        
       | tuukkah wrote:
       | I appreciated getting from maths to CS with Structure and
       | Interpretation of Computer Programs:
       | https://mitpress.mit.edu/sites/default/files/sicp/full-text/...
        
       | noir_lord wrote:
       | Engineering Mathematics - K.A Stroud
       | 
       | It's sometimes useful to see the context of mathematics and it's
       | purpose beyond the intrinsic beauty.
        
       | logicslave wrote:
       | The classic text on analysis is Principles of Mathematical
       | Analysis by Rudin. Its very difficult and leaves it to the reader
       | to understand the terse proofs. It starts from the beignning,
       | with no math background assumed about the reader. The terse
       | proofs are written in such a way to force the reader to gain deep
       | mathematical intuition. Some of the proofs are elegant and
       | beautiful. I would absolutely recommend it. You can see a pdf
       | here:
       | 
       | https://notendur.hi.is/vae11/%C3%9Eekking/principles_of_math...
        
         | bordercases wrote:
         | > It starts from the beignning, with no math background assumed
         | about the reader.
         | 
         | It assumes that you have enough mathematical maturity to deal
         | with proofs left to the reader.
        
           | chynaman wrote:
           | IMO, Rudin is difficult not because of its proofs or lack of
           | them (many proofs in discrete math can be no less brutal than
           | anything in Rudin), rather that it's almost completely and
           | utterly devoid of illuminating examples. For example, the
           | definitions of "neighborhood", "limit point", "closed set",
           | "open set", "bounded set", "perfect set", dense set" are
           | crammed into a single definition 2.18 in chapter 2(Topology
           | in Euclidean Spaces) in 3rd edition. The rest of the chapter
           | is made up of theorems and corollaries. No related examples.
           | On the other hand, Raffi Grinberg's analysis book meant to
           | guide one through Rudin's book spends a whole chapter on
           | elaborating on 2.18. And to be honest even that is barely
           | adequate (totally inadequate, actually) if one wishes to
           | become technically proficient in dealing with basic concepts
           | in analysis with ease (that requires exposure to lots and
           | lots of different examples). Although, probably, neither book
           | has the latter as their goal.
        
       | tobinfricke wrote:
       | I enjoyed "The Mathematical Tourist" by Ivars Peterson although
       | it might be more "descriptive" than you are looking for. I found
       | it quite inspiring, probably early in high school (forget when
       | exactly I got it - maybe even earlier).
        
       | btrettel wrote:
       | I worked through a lot of this partial differential equations
       | book during downtime while working in a gas station after my
       | freshman year of college:
       | 
       | https://www.amazon.com/Differential-Equations-Scientists-Eng...
       | 
       | Might be a little advanced for most teenagers (I was 19 that
       | summer), but I love the book and still refer to it from time to
       | time. I did have experience with ordinary differential equations
       | at the time, but I haven't found an ODE book that's quite the
       | same.
        
       | LordOmlette wrote:
       | I suggest Infinite Powers by Steven Strogatz. It doesn't matter
       | if they already took a calculus course, I guarantee it's a much
       | better way to make them appreciate the the subject than any
       | textbook. And if they don't know calculus yet, that just makes it
       | even better!
       | 
       | If I'd read this book as a teenager, maybe I would've passed Calc
       | I on my first try as opposed to my third. With a C-.
        
       | [deleted]
        
       | layoutIfNeeded wrote:
       | I remember being blown away by this book as a teen: James Gleick
       | - Chaos: Making a New Science https://www.amazon.com/Chaos-
       | Making-Science-James-Gleick/dp/...
        
       | tobinfricke wrote:
       | Maybe a textbook like _Topology_ by Armstrong, or _Galois Theory_
       | by Ian Stewart.
        
       | guidoism wrote:
       | Arithmetic by Paul Lockhart
       | 
       | https://www.hup.harvard.edu/catalog.php?isbn=9780674237513
        
       | dTal wrote:
       | For a deep, but deeply entertaining introduction to
       | extraordinarily high-level concepts that remain useful tools of
       | thought forever - Godel, Escher, Bach. That belongs on everyone's
       | bookshelf.
       | 
       | For a kind of "cabinet of curiosities", I endorse "Wonders of
       | Numbers" by Clifford Pickover. This book was pivotal in my
       | relationship with mathematics, containing as it does brief
       | excursions into all manner of fascinating topics like cellular
       | automata, and the Collatz Conjecture, as well as a host of more
       | obscure oddities. It's a perfect book to have around when
       | learning programing as well, since it has a nearly bottomless
       | well of interesting things to code. Nor is it dry, thanks to
       | Pickover's whimsical style.
        
       | graycat wrote:
       | Linear algebra, and more than one such book.
       | 
       | IMHO long and still the best linear algebra book is
       | 
       | Halmos, _Finite Dimensional Vector Spaces_ (FDVS).
       | 
       | It was written in 1942 when Halmos was an "assistant" to John von
       | Neumann at the Institute for Advanced Study. It is intended to be
       | finite dimensional vector spaces but done with the techniques of
       | Hilbert space. The central result in the book, according to
       | Halmos, is the spectral decomposition. One result at a time, the
       | quality of von Neumann comes through. Commonly physicists have
       | been given that book as their introduction to Hilbert space for
       | quantum mechanics.
       | 
       | But FDVS is a little too much for a first book on linear algebra,
       | or maybe even a second book, should be maybe a third one.
       | 
       | Also high quality is Nering, _Linear Algebra and Matrix Theory_.
       | Again, the quality comes through: Nering was a student of Artin
       | at Princeton. There Nering does most of linear algebra on just
       | finite fields, not just the real and complex fields; finite
       | fields in linear algebra are important in error correcting codes.
       | So, that finite field work is a good introduction to abstract
       | algebra.
       | 
       | For a first book on linear algebra, I'd recommend something easy.
       | The one I used was
       | 
       | Murdoch, _Linear Algebra for Undergraduates_.
       | 
       | It's still okay if can find it.
       | 
       | For a first book, likely the one by Strang at MIT is good. Just
       | use it as a first book and don't take it too seriously since are
       | going to cover all of it and more again later.
       | 
       | I can recommend the beginning sections on vector spaces,
       | convexity, and the inverse and implicit function theorems in
       | 
       | Fleming, _Functions of Several Variables_
       | 
       | Fleming was long at the Brown University Division of Applied
       | Math. The later chapters are on measure theory, the Lebesgue
       | integral, and the exterior algebra of differential forms, and
       | there are better treatments.
       | 
       | Also there is now
       | 
       | Stephen Boyd and Lieven Vandenberghe, _Introduction to Applied
       | Linear Algebra - Vectors, Matrices, and Least Squares_
       | 
       | at
       | 
       | http://vmls-book.stanford.edu/vmls.pdf
       | 
       | Since the book is new, I've only looked through it -- it looks
       | like a good selection and arrangement of topics. And Boyd is
       | good, wrote a terrific book, maybe, IMHO likely, the best in the
       | world, on convexity, which is in a sense is _half_ of
       | _linearity_.
       | 
       | Some course slides are available at
       | 
       | http://vmls-book.stanford.edu/
       | 
       | For reference for more, have a copy of
       | 
       | Richard Bellman, _Introduction to Matrix Analysis: Second
       | Edition_.
       | 
       | Bellman was famous for dynamic programming.
       | 
       | For computations in linear algebra, consider
       | 
       | George E. Forsythe and Cleve B. Moler, _Computer Solution of
       | Linear Algebraic Systems_
       | 
       | although now the Linpack materials might be a better starting
       | point for numerical linear algebra. Numerical linear algebra is
       | now a well developed specialized field, and the Linpack materials
       | might be a good start on the best of the field. Such linear
       | algebra is apparently the main yardstick in evaluating the highly
       | parallel supercomputers.
       | 
       | After linear algebra go through
       | 
       | Rudin, _Principles of Mathematical Analysis_ , Third Edition.
       | 
       | He does the Riemann integral very carefully, Fourier series,
       | vector analysis via exterior algebra, and has the inverse and
       | implicit function theorems (key to differential geometry, e.g.,
       | for relativity theory) as exercises.
       | 
       | All of this material is to get to the main goals of measure
       | theory, the Lebesgue integral, Fourier theory, Hilbert space and
       | Banach space as in, say, the first, real (not complex) half of
       | 
       | Rudin, _Real and Complex Analysis_
       | 
       | But for that I would start with
       | 
       | Royden, _Real Analysis_
       | 
       |  _sweetheart_ writing on that math.
       | 
       | Depending on the math department, those books might be enough to
       | pass the Ph.D. qualifying exam in Analysis. It was for me: From
       | those books I did the best in the class on that exam.
       | 
       | Moreover, from independent study of Halmos, Nering, Fleming,
       | Forsythe, linearity in statistics, and some more, I totally blew
       | away all the students in a challenging second (maybe
       | intentionally flunk out), advanced course in linear algebra and,
       | then, did the best in the class on the corresponding qualifying
       | exam, that is, where that second course was my first formal
       | course in linear algebra.
       | 
       | Lesson: Just self study of those books can give a really good
       | background in linear algebra and its role in the rest of pure and
       | applied math.
       | 
       | No joke, linear algebra, and the associated vector spaces, is one
       | of the most important courses for more work in pure and applied
       | math, engineering, and likely the future of computing.
        
       | thecolorblue wrote:
       | This may not be exactly what you are looking for but you should
       | checkout the cartoon introduction to economics by Yoram Bauman.
       | Its a good book to start an interest in economics, it is not deep
       | at all but could lead to other sources.
        
       | coeneedell wrote:
       | For something that's a little more fun to read and covers
       | fundamental topics. (Foundations for higher mathematics) I'd
       | recommend Godel, Escher, Bach by Douglas Hofsteader. It changed
       | the way I approach problems to this day.
        
       | phonebucket wrote:
       | William Dunham has two books which are great: 1- Euler (The
       | Master of us all) 2- Journey Through Genius.
       | 
       | John Stillwell's Mathematics and Its History.
       | 
       | Needham's Visual Complex Analysis.
        
       | super_mario wrote:
       | I would recommend highly "What is Mathematics" by Richard Courant
       | and Herbert Robbins. This is very accessible book for high
       | schoolers who are keen and interested in mathematics, and will
       | expose the reader to a broad array of topics and pique the
       | interest and awaken the imagination and instill the beauty of
       | mathematics. This in turn can drive the reader to find out more
       | and fall in love with the subject.
       | 
       | I would second this by "Concrete Mathematics" by Graham, Knuth
       | and Patashnik. This is actual university course book with very
       | formal proofs and theory, but the subject matter is still largely
       | accessible to serious high school students and demonstrates
       | beautiful reasoning examples throughout. It is also very
       | practical book, after covering techniques in this book, one can
       | often times calculate exact sums of infinite series quicker than
       | estimating their bounds. If your high school student decides to
       | study math at university level, the techniques and skills taught
       | in this book will prove invaluable in broad areas of study.
        
       | Consultant32452 wrote:
       | I passed the AP calc exam with calculus for dummies. It was
       | great, though I'm not sure that kind of title is received well as
       | a gift.
        
       | analbumcover wrote:
       | Abstract Algebra by Pinter and Introduction to Topology by
       | Mendelson are two fantastic books, published by Dover, that are
       | too elementary to be used as university textbooks on those
       | subjects but as a result are great for a more casual reader. They
       | are well motivated and rarely omit details. They would serve as a
       | great introduction to undergraduate math.
        
       | SamReidHughes wrote:
       | I bought it, but I only read a chapter of it, after seeing it in
       | a bookstore. Nonetheless:
       | 
       |  _Mrs. Perkins 's Electric Quilt: And Other Intriguing Stories of
       | Mathematical Physics_ by Paul J. Nahin
       | 
       | It sounds like it's at about the right difficulty/knowledge
       | level, and it has interesting stuff, isn't a boring textbook.
        
       | KenoFischer wrote:
       | If you want to get away from analysis, I've found that
       | cryptography can be quite an engaging subject. If you have the
       | right book, it can have the rigors of more mathematical subjects,
       | while being accessible without extensive background and having
       | visible real-world applications. I unfortunately don't have much
       | experience with books in this area, but I do like
       | https://files.boazbarak.org/crypto/lnotes_book.pdf (plus it's
       | free ;) ).
       | 
       | [EDIT: Previously I recommended _Calculus on Manifolds_ here
       | also, but on further reflection and reading some of the other
       | responses I think I both misremembered the difficulty level of
       | the book and overestimated what early-undergrad level means]
        
       | new2628 wrote:
       | "Proofs from the book" is very neat.
        
       | giantg2 wrote:
       | This isn't bad. I'm surprised it's expensive now.
       | 
       | https://www.amazon.com/No-bullshit-guide-math-physics/dp/099...
        
         | ivan_ah wrote:
         | Thx for plug. Indeed it would be a good book for any
         | highschooler interested in more advanced topics.
         | 
         | > I'm surprised it's expensive now.
         | 
         | Yeah amazon pricing is weird. My intent is for the book to be
         | sold ~$30, but if I tell this price to amazon they start
         | selling it for $20 after discounting, and then readers buy it
         | less because they think it is not a complete book, but just
         | some sort of summary notes. Nowadays I set the price to $40 so
         | that after amazon discount the price will end up around $30,
         | but today it is expensive indeed... I might have to bump it
         | down to $35 at some point.
        
       | soVeryTired wrote:
       | I stumbled on Q.E.D by Feynman at a young age - it had a deep
       | influence on me. I also read parts of "the mathematical
       | experience" by Davis and Hersch, and "Godel, Escher, Bach" by
       | Douglas Hofstadter.
       | 
       | It's not really maths, but _Spacetime Physics: Introduction to
       | Special Relativity_ would have been great for me at that age.
       | 
       | The Princeton Companion is a cool book, but it'd be better suited
       | to a graduate in mathematics.
        
       | lanstin wrote:
       | Metamathematics by Kleene. Fairly accessible math, mostly new and
       | developed from the start it takes one into compatibility theory
       | and formalization of maths in a way that makes Godel easy to
       | understand and just full of cool ideas that are very relevant to
       | today's world of computers and the limits to certainty.
        
       | rramadass wrote:
       | Some of the books that you mention seem a bit too hard for a
       | teen, so you have to be careful not to demotivate them by
       | expecting too much of them; instead i suggest a simpler approach
       | before tackling the big ones;
       | 
       | * _Functions and Graphs by Gelfand et al._ - A small but great
       | book to develop intuition.
       | 
       | * _Who is Fourier? A Mathematical Adventure_ - A great  "manga
       | type" book to build important concepts from first principles
       | 
       | * _Concepts of Modern Mathematics by Ian Stewart_ - A nice
       | overview in simple language.
       | 
       | * _Mathematics: Its Content, Methods and Meaning by Kolmogorov et
       | al._ - A broad but concise presentation of a lot of mathematics.
       | 
       | * _Methods of Mathematics Applied to Calculus, Probability, and
       | Statistics by Richard Hamming_ - A very good applied maths book.
       | All of Hamming 's books are recommended.
       | 
       | There are of course plenty more but the above should be good for
       | understanding.
        
         | auxym wrote:
         | Just wanted to chime in regarding Concepts of modern
         | mathematics.
         | 
         | Really enjoyed reading it when I was in college. It's not a
         | textbook, just a prose book for enjoyable reading, but it's
         | inspirational and a very interesting overview of the field of
         | mathematics.
        
       | zakk wrote:
       | I suggest "What Is Mathematics?" by Richard Courant and Herbert
       | Robbins.
       | 
       | https://en.wikipedia.org/wiki/What_Is_Mathematics%3F
        
         | blendo wrote:
         | My high school math professor recommended this to me 40 years
         | ago.
         | 
         | I got it, then put it on a shelf for 20 years. When I picked it
         | back up, it somehow had become delightful! Perfect subway
         | reading.
         | 
         | Review: http://www.ams.org/notices/200111/rev-blank.pdf
        
       | asknthrow2020 wrote:
       | For analysis you absolutely MUST read Principles of Mathematical
       | Analysis by Walter Rudin. Covers everything and is literally a
       | gold standard text in modern analysis. "Baby Rudin" is
       | essentially the analysis bible that all subsequent texts worked
       | off of.
        
         | rokobobo wrote:
         | Seconded. For what it's worth, Harvard's Math 55 uses that as
         | its textbook.
        
       | pmiller2 wrote:
       | I'm going to go a completely different direction from other
       | recommendations and say _Concrete Mathematics_ by Knuth and
       | Patashnik. They will definitely be able to use skills from
       | analysis and calculus here, but there are so many additional
       | tools in this book that it 's very much a worthwhile digression.
       | The marginal notes are great, as well!
       | 
       | I own this book, and it's a favorite of mine.
       | 
       | https://www.amazon.com/Concrete-Mathematics-Foundation-Compu...
        
         | kolinko wrote:
         | When I saw the title, this was the first book that came to my
         | mind. Very nicely written, possibly the best math book I've
         | read (as a Computer Science MSc)
        
         | javajosh wrote:
         | Great pick. Note: you can get it for $20 less AND support a
         | local used book store if you buy it from alibris.
         | https://www.alibris.com/Concrete-Mathematics-A-Foundation-fo...
        
       | wolfi1 wrote:
       | "What is Mathematics" by Courant, a classic
        
       | Someone wrote:
       | For broadening their view:
       | 
       | - Proofs and Refutations by Imre Lakatos
       | (https://en.wikipedia.org/wiki/Proofs_and_Refutations) (makes you
       | think about what a proof really is)
       | 
       | - The World of Mathematics: not a lot of math proper, doesn't
       | have much depth, but lots of examples of applied math, interwoven
       | with mentions of the history of mathematics
       | (https://www.amazon.com/World-Mathematics-Four-Set/dp/0486432...)
        
       | francasso wrote:
       | I think I would have really enjoyed Mathematics and its History
       | by Stillwell. It does a good job connecting analysis, algebraic
       | geometry and number theory following the historical evolution of
       | modern topics.
        
       | MperorM wrote:
       | During the first year of my undergrad someone introduced me to
       | Godel, Escher, Bach. I thought it was mind blowing at the time
       | and still find it to be an incredible introduction to formal
       | systems, thinking mathematically and understanding the concept of
       | proofs.
       | 
       | All these concepts are central to higher level mathematics, and
       | are not covered in high school (at least not the Danish one).
       | 
       | I'm was very thankful for that introduction, hopefully they would
       | be as well :)
        
         | [deleted]
        
         | pvitz wrote:
         | I read it when I was 16 and it was just wonderful. I can also
         | recommend it.
        
         | javajosh wrote:
         | I have to disagree with you here, and strongly. I don't think
         | _Godel, Escher, Bach_ is a good book. Hofstaeder is clearly
         | very smart, curious, and open-minded, and I love all those
         | things, but the book itself is just so pretentious and sort of
         | pointless. It 's precisely the wrong kind of book you want to
         | give a bright teenager, because it will only encourage them to
         | get a head-start inserting their head up their own arsehole,
         | metaphorically speaking.
        
           | [deleted]
        
           | msla wrote:
           | > I don't think Godel, Escher, Bach is a good book.
           | Hofstaeder is clearly very smart, curious, and open-minded,
           | and I love all those things, but the book itself is just so
           | pretentious and sort of pointless.
           | 
           | I'm curious: Do you feel this way because it isn't a math
           | textbook?
        
             | javajosh wrote:
             | Not at all. My own recommendation, _God created the
             | Integers_ , isn't a math textbook. I doubt Hofstadter
             | himself would claim GEB had a _point_ - it was more of an
             | intellectual fugue put to paper. If GEB was a novel it
             | would be more along the lines of _Finnegan 's Wake_ than
             | _Les Miserables_ , and I would never ever give the former
             | to a teenager.
        
       | carlosf wrote:
       | Can't go wrong with Spivak's Calculus.
        
       | galkk wrote:
       | There's a good gift, a bad gift, and a book though
        
       | javajosh wrote:
       | God Created the Integers: The Mathematical Breakthroughs That
       | Changed History. Stephen Hawking. I bought mine for cheap on
       | alibris (https://www.alibris.com/God-Created-the-Integers-The-
       | Mathema...)
       | 
       | From the blurb:
       | 
       | "...includes landmark discoveries spanning 2500 years and
       | representing the work of mathematicians such as Euclid, Georg
       | Cantor, Kurt Godel, Augustin Cauchy, Bernard Riemann and Alan
       | Turing. Each chapter begins with a biography of the featured
       | mathematician, clearly explaining the significance of the result,
       | followed by the full proof of the work, reproduced from the
       | original publication, many in new translations."
       | 
       | What's great about this book for a teenager is that they get to
       | read _original sources_ for the stuff they 've already learned!
       | And indeed, as they learn more they can keep coming back for more
       | original sources. Personally, reading Descartes original words in
       | _Geometry_ was awe-inspiring, not because every word was so
       | perfect, but because he comes across as just so damn human, the
       | ideas he presents are subtle and profound, and yet presented with
       | an interesting combination of humility and pride that is
       | instantly recognizable. I truly wish I 'd had something like that
       | book before embarking on my own journey through math - we stand
       | on the shoulders of giants, but we so rarely look down to see
       | their faces.
        
       | fxtentacle wrote:
       | When I was younger, I received a book about video game physics as
       | a gift. The combination of applied mathematics and, well, games
       | really hooked me for that year. In the end, I built my own
       | physics simulation and collision detection engine after school.
        
       | prof-dr-ir wrote:
       | In response to the question about the best book to learn
       | [subject] from, the best answer I ever received was: "the third
       | book".
       | 
       | The point being, of course, that it may take a few different
       | expositions before something 'clicks'. I think this observation
       | is particularly important for self study.
       | 
       | So, in answer to your question: maybe more than one book?
        
       | jostylr wrote:
       | I remember Pi in the Sky by John Barrows very fondly. It has more
       | of a focus on geometry and logic.
       | 
       | A Programmer's Introduction to Mathematics by Jeremy Kun is wide
       | ranging and appropriate if there is also interest in programming.
       | 
       | Nature and Growth of Modern Mathematics by Edna Kramer is a
       | wonderful book if history is a passion as well.
       | 
       | Elements of Mathematics by John Stillwell is a broad overview of
       | subjects. It has a crisp mathematical feel to it.
       | 
       | Vector Calculus, Linear Algebra, and Differential Forms by John &
       | Barbara Hubbard is a beautiful introduction to the multi-
       | dimensional aspects, but it is a book that should happen after
       | knowing one dimensional calculus. .
       | 
       | If your child hasn't been exposed to Guesstimation, then a book
       | on that is highly recommended. The book with that title by
       | Weinstein and Adams is a nice guide to investigating that realm.
       | 
       | If the child does arithmetic from right to left, as is sadly too
       | common, the book Speed Mathematics Simplified by Edward Stoddard
       | is a great remedy for that.
       | 
       | Everyday Calculus by Oscar Fernandez could also be worth a look.
        
       | mike00632 wrote:
       | I think "Godel, Escher, Bach" is the perfect book.
        
       | tjr wrote:
       | I'm going to guess that for the OP, their reader is already past
       | this level, but sharing anyway for the benefit of others, as I
       | think it's a great book for roughly around that age:
       | 
       | https://www.amazon.com/Prof-McSquareds-Calculus-Primer-Inter...
        
       | debbiedowner wrote:
       | Princeton companion regular and applied version 100% is the one
       | book I wished I got in HS. Shows how big the world is which is
       | very useful at that age.
       | 
       | That's education wise. Story wise I like "love and math" despite
       | the corny title.
       | 
       | Puzzle/mystery wise "the Scottish book" would have seemed like
       | alien speak to me in HS, aspirational but probably too tough.
       | 
       | Inside interesting integrals is cool if you want to go on a
       | computation spree.
       | 
       | My fave academic book from HS was General Chemistry by Pauling.
       | 
       | IMO the best calculus/real analysis book is by Benedetto & Czaja.
       | But HS age much better is Advanced Calculus by Fitzpatrick.
       | 
       | Introduction to statistical learning is very readable at that
       | age.
       | 
       | CS wise I think Skienas algorithm design manual is the best.
        
       | gen220 wrote:
       | If they like calculus and can stand proofs, I'd recommend a
       | _Course of Pure Mathematics_ by Hardy. It totally blew my mind
       | when I was that age, to see how everything was "connected" by
       | proofs, starting with real numbers. Despite being proof heavy, I
       | found the writing style singularly legible and comprehensible.
        
       | wqTJ3jmY8br4RWa wrote:
       | Mathematics: Its Content, Methods and Meaning (3 Volumes in One)
       | Paperback - by A. D. Aleksandrov, A. N. Kolmogorov, M. A.
       | Lavrent'ev
       | 
       | The best book.
        
       | enriquto wrote:
       | The princeton companion is nice to have around, but you do not
       | really read it end to end.
       | 
       | Spivak's calculus you bring to the beach and read it between swim
       | and swim.
       | 
       | EDIT: Also, some books by Hilbert are breathtakingly beautiful:
       | Geometry and the Imagination (just the chapter on synthetic
       | differential geometry is worth more than 10 other great books),
       | and the Methods of Mathematical Physics is also great. It begins
       | by giving three proofs of cauchy-schwartz inequality, and then
       | goes on to give several different definitions of the eigenvectors
       | of a matrix. Both of those make great beach readings for this
       | summer.
        
       | iansinke wrote:
       | Around that age, I read "The Heart of Mathematics", by Edward
       | Burger and Michael Starbird. It's a really fun book which
       | introduces a wide variety of math concepts while being amusing to
       | read.
       | 
       | https://www.amazon.com/Heart-Mathematics-invitation-effectiv...
        
       | foolmeonce wrote:
       | The little LISPer is the book I wish I encountered junior/senior
       | year. For someone coming from more of a traditional math/logic
       | education than anything else, it would have been nice to have
       | that introduction to thinking about computation before classes in
       | C.
        
       | JoeMayoBot wrote:
       | The OpenStax series are free. I've found the explanations very
       | clear and detailed:
       | 
       | https://openstax.org/subjects/math
       | 
       | Some are even downloadable to a Kindle (for free) on Amazon.
        
       | enhdless wrote:
       | _The Manga Guide to Linear Algebra_ was a light, but useful
       | introduction to linear algebra for me during the summer before my
       | freshman year of college.
        
       | generationP wrote:
       | _Concrete Mathematics_ by Knuth and Patashnik (already mentioned
       | for u /pmiller2) if the kid likes numbers. That's perhaps the
       | guiding thread of the book -- it's about the beautiful (yet
       | usually very elementary and natural) things you can do with
       | numbers.
       | 
       |  _Geometry Revisited_ by Coxeter and Greitzer and /or _Episodes
       | in Nineteenth and Twentieth Century Euclidean Geometry_ by
       | Honsberger if the kid is into plane geometry. It 's an idyllic
       | subject, great for independent exploration, and the books
       | shouldn't take long to read. Not very deep, though (at least
       | Honsberger).
       | 
       | Anything by Tom Korner, just because of the writing. Seriously,
       | he can make the axiomatic construction of the real number system
       | read like a novel; open
       | https://web.archive.org/web/20190813160507/https://www.dpmms...
       | on any page and you will see.
       | 
       |  _Proofs from the BOOK_ by Aigner and Ziegler is a cross-section
       | of some of the nicest proofs in reasonably elementary (read:
       | undergrad-comprehensible) maths. Might be a bit too advanced,
       | though (the writing is terse and a lot of ground is covered).
       | 
       |  _Problems from the BOOK_ by Andreescu and Dospinescu (a play on
       | the previous title, which itself is a play on an Erdos quote) is
       | an olympiad problem book; it might be one of the best in its
       | genre.
       | 
       | Oystein Ore has some nice introductory books on number theory (
       | _Number Theory and its History_ ) and on graphs ( _Graphs and
       | their uses_ ); they should be cheap now due to their age, but
       | haven't gotten any less readable.
       | 
       |  _Kvant Selecta_ by Serge Tabachnikov is a 3(?)-volume series of
       | articles from the Kvant journal translated into English. These
       | are short expositions of elementary mathematical topics written
       | for talented (and experienced) high-schoolers.
       | 
       | I wouldn't do _Princeton Companion_ ; it's a panorama shot from
       | high orbit, not a book you can really read and learn from.
        
         | jacobolus wrote:
         | If the kid likes plane geometry and is interested in further
         | math, I'd highly recommend Yaglom's books _Geometric
         | Transformations_. They are a series of (hard) problem-focused
         | books which teach the ideas of transformation geometry in
         | service of solving various construction problems.
         | 
         | In general transformation geometry is drastically
         | underemphasized in American (and possibly other countries')
         | secondary and early undergraduate math education.
        
       | 0x11 wrote:
       | > I'm looking for recommendations for a maths book for a bright,
       | self-motivated child in their late teens who is into maths
       | (mainly analysis) at upper high-school / early undergrad level.
       | 
       | > It would be a birthday gift, so ideally something that is more
       | than a plain textbook, but which also has depth, and maybe
       | broadens their view of maths beyond analysis. I'm thinking
       | something along the lines of The Princeton Companion to
       | Mathematics, Spivak's Calculus, or Moor & Mertens The Nature of
       | Computation.
       | 
       | > What would you have appreciated having been given at that age?
       | 
       | Common Sense Mathematics by Ethan D. Bolker and Maura B. Mast
       | 
       | My friend was assigned this book for a quantitative reasoning
       | class in college and I was so impressed by how approachable it
       | was. It's got sections on things like climate change and Red Sox
       | ticket prices.
       | 
       | Excerpt from preface:
       | 
       | """ One of the most important questions we ask ourselves as
       | teachers is "what do we want our students to remember about this
       | course ten years from now?"
       | 
       | Our answer is sobering. From a ten year perspective most thoughts
       | about the syllabus -- "what should be covered" -- seem
       | irrelevant. What matters more is our wish to change the way we
       | approach the world. """
        
       | tostitos1979 wrote:
       | Surely your joking Mr Feinman. I was a child prodigy eons ago and
       | wished I read that when I was a teen.
        
       | SquishyPanda23 wrote:
       | Of the books mentioned in this thread so far I think I'd have
       | been most excited about the Princeton Companion to Mathematics as
       | a birthday present.
       | 
       | Here's why:
       | 
       | - Your goal of the gift is something more than a plain textbook.
       | The Princeton Companion is something your child will return to
       | throughout their math career. It will be an anchor book that will
       | remind them of your support for them when they were still a
       | budding mathematician.
       | 
       | - Relatedly, the book is far too broad to be consumed as a
       | textbook. Hence it will be more like a friend (or companion :) )
       | on their journey. Even a really amazing textbook (like Baby
       | Rudin) in contrast is just a snapshot of where they are now.
        
       | nbernard wrote:
       | _The Pleasures of Counting_ by T. W. Korner. If you want
       | something more oriented towards analysis, I see he also authored
       | a _Calculus for the Ambitious_ but I have no experience with it.
        
       | seesawtron wrote:
       | Jordan Ellenberg's "How not to be wrong". Recommended even for
       | non teenagers.
        
       | mhh__ wrote:
       | Visual Complex Analysis. Partly because it's a brilliant book and
       | partly because Complex Analysis is often really really badly
       | taught.
       | 
       | If you haven't read it, it teaches complex analysis in terms of
       | transformations and pictures rather than solely algebra. It's
       | very clever; Also touches on some concepts in physics and vector
       | calculus.
       | 
       | If you like the style 3Blue1Brown uses, he cites VCA as an
       | inspiration for that style.
        
         | jacobolus wrote:
         | If you like pictures, another couple nice books are Nathan
         | Carter's _Visual Group Theory_ and Marty Weissman's
         | _Illustrated Theory of Numbers_ , both of which should be
         | accessible to motivated high school students.
         | 
         | http://web.bentley.edu/empl/c/ncarter/vgt/
         | 
         | http://illustratedtheoryofnumbers.com
        
         | exmadscientist wrote:
         | A more traditional complex analysis textbook that's really good
         | is Stewart and Tall's _Complex Analysis_. It 's not necessarily
         | a great complement to VCA; I used them both in my course and
         | didn't find myself referring to VCA much, but then I had good
         | lectures in my course and _really_ got on with Stewart and
         | Tall.
         | 
         | The "standard" book was Churchill and Brown and, uh, I'd say
         | that one is best avoided. It's awful enough that it may be
         | responsible for a number of those courses being so badly
         | taught....
        
       | SMAAART wrote:
       | Buy them 2 books as follows:
       | 
       | #1: your "The Princeton Companion.." or any of the great
       | suggestions that you got here
       | 
       | AND THEN
       | 
       | #2: "Godel, Escher, Bach: an Eternal Golden Braid" by Douglas
       | Hofstadter. Best if you can get an old, old beat up paper copy at
       | Amazon. Tell him that if he's lucky it will take him a lifetime
       | to actually "get it". Tell him to keep the book in sight,
       | bedroom, studio.. why not, bathroom. And to just read it not
       | sequentially but at random. That is the best present to a mind
       | thirsty for knowledge.
       | 
       | He might not appreciate it right not, he will appreciate it 30
       | years from today, if he's lucky.
        
       | pera wrote:
       | _Mathematics: A Discrete Introduction_ by Edward R. Scheinerman:
       | 
       | https://books.google.com/books/about/Mathematics_A_Discrete_...
       | 
       | I bought this book when I was ~16 because I wanted to learn some
       | discrete maths, but it actually touches many different
       | interesting topics that you don't see in secondary school
       | (including some cryptography!).
        
       | jchallis wrote:
       | Polya's How to Solve It changed the way I thought about learning
       | mathematics. His treatment of random walks in one dimension
       | (eventually all walks return to the same point) vs three
       | dimensions (where they can escape) really affected my mental
       | model of the world.
        
         | jacobolus wrote:
         | Instead of _How To Solve It_ , which is organized dictionary-
         | style with short sections on particular named problem solving
         | topics, and is somewhat hard to interpret for novices without
         | guidance, let me recommend Polya's other two books (each 2
         | volumes), _Mathematical Discovery_ and _Mathematics and
         | Plausible Reasoning_.
        
       | montalbano wrote:
       | Spivak is an excellent choice but may be too advanced depending
       | on his level. I would also strongly recommend any of the books in
       | the Art of Problem Solving series:
       | 
       | https://artofproblemsolving.com/store/list/aops-curriculum
       | 
       | I've got a PhD in bioengineering but I'm currently going through
       | Introduction to Counting and Probability and I'm really enjoying
       | it.
       | 
       | Some others (not AOPS series):
       | 
       | Nelsen - Proofs Without Words
       | 
       | Polya - How to Solve it
       | 
       | Strogatz - Nonlinear Dynamics and Chaos
        
       | anirudhcoder wrote:
       | https://www.amazon.com/Mathematical-Circles-Dmitry-Fomin/dp/...
       | 
       | It is a book produced by a remarkable cultural circumstance in
       | the former Soviet Union which fostered the creation of groups of
       | students, teachers, and mathematicians called "Mathematical
       | Circles". The work is predicated on the idea that studying
       | mathematics can generate the same enthusiasm as playing a team
       | sport-without necessarily being competitive. This book is
       | intended for both students and teachers who love mathematics and
       | want to study its various branches beyond the limits of the
       | school curriculum. It is also a book of mathematical recreations
       | and, at the same time, a book containing vast theoretical and
       | problem material in main areas of what authors consider to be
       | "extracurricular mathematics".
        
         | jacobolus wrote:
         | This would be better for a 10-14 year old in middle school or
         | early high school.
        
           | enriquto wrote:
           | Hmmm. There's no way my 10 year old daughter would read
           | beyond the first page of that thing. For 15-16 it's great.
        
             | jacobolus wrote:
             | This is more about level of preparation / past experience
             | than age per se. The OP describes a "bright, self-motivated
             | child in their late teens who is into maths" and is a few
             | years ahead of their peers. The mentioned book might seem a
             | bit easy or elementary for this particular kid. The two
             | _Berkeley Math Circle_ books might be better.
             | https://mathcircle.berkeley.edu/books
             | 
             | You are right that a book aimed at well prepared Russian
             | 12-year-olds in an extracurricular math circle might be
             | fine for 16-year-old average American students.
        
       | scythe wrote:
       | >What would you have appreciated having been given at that age?
       | 
       | I remember getting _God Created The Integers_ when I was a
       | teenager and... not finishing it. I also got a copy of Brown  &
       | Churchill's _Complex Variables and Applications_ and spent
       | hundreds of hours on it. As a teenager, I preferred textbooks
       | with problem sets to popularizations. (I still do.) Of course,
       | this was [complex] analysis, so it doesn 't qualify.
       | 
       | One book which is fully technical but also entertaining by way of
       | the subject matter, and which was inspiring to me around 14-15,
       | was Kenneth Falconer's _Fractal Geometry_ :
       | 
       | https://www.amazon.com/Fractal-Geometry-Mathematical-Foundat...
       | 
       | Of course, at that age, I didn't understand what Falconer meant
       | by describing the Cantor set as "uncountable", or what a
       | "topological dimension" was, but I was able to grasp the gist of
       | many of the arguments in the book because it is very well
       | illustrated and does not rely too much on abstruse algebra
       | techniques. Some people don't enjoy reading a book if they don't
       | fully understand it, but I liked that kind of thing. As I got
       | older and learned more, I started to be able to understand the
       | technical arguments in the book as well.
        
         | javajosh wrote:
         | I would give _God Created The Integers_ as a reference to read
         | up to where you are in math, not as something to get through.
         | So, you could get a feel for what Euclid wrote, or what
         | Descartes wrote, either after or during learning those lessons.
         | As you move through your education, you can keep moving through
         | the book, Cauchy, Galois, Riemann, etc. Anyway, that 's the
         | context in which _I_ would give it. BTW Cantor 's original
         | diagonal proof is in GCTI. :)
        
       | pgtan wrote:
       | "Uncle Petros and Goldbach's Conjecture" by Apostolos Doxiadis.
       | 
       | Not a math book, but a really well written, full with math
       | history novel about the value of mathematics in a human's life.
       | It gives you the reason, why you should know (higher) maths, even
       | if you will won't become a mathematician.
        
       | ljf wrote:
       | https://en.m.wikipedia.org/wiki/Flatland - Flatland - A romance
       | in many dimensions
       | 
       | It was a great book that helped get my teenage enquiring mind to
       | look at maths, science and thinking in different ways. Not a text
       | book - but well worth a read.
        
         | pvg wrote:
         | Flatland also contains some rather, well, Victorian attitudes.
         | Mathematically, one can get 73.8193% of what the book covers
         | from watching Carl Sagan's bit in the relevant Cosmos episode.
        
       | Koshkin wrote:
       | Calculus by M.Kline would be not a bad start. For a broad (yet
       | detailed) overview, Mathematics by Aleksandrov et al. is
       | exceptional.
        
       | ColinWright wrote:
       | "The Joy of X" by Steven Strogatz
       | 
       | "Euler's Gem" by Dave Richeson
       | 
       | "A Companion to Analysis" by Tom Korner
       | 
       | "Elementary Number Theory: A Problem Oriented Approach" by Joe
       | Roberts
        
       | impendia wrote:
       | I'd consider something by John Stillwell. For example, _Numbers
       | and Geometry_ , which investigates the connections between number
       | theory and plane geometry -- two subjects which your child has
       | probably seen, but not seen related.
       | 
       | Stillwell is a magnificent writer -- he loves to go on
       | digressions, and to talk about the history of the subject. My
       | impression is that his books are a bit rambling for traditional
       | use as textbooks, but perfect for self-motivated reading for
       | exactly the same reason. He makes the subject _fun_.
       | 
       | (Disclaimer: I haven't read this book in any sort of depth, but I
       | have read another of Stillwell's books cover to cover.)
       | 
       | Concerning your other recommendations: _The Princeton Companion
       | to Mathematics_ is magnificent, but in practice it 's something
       | he'd be more likely proudly own and display on his bookshelf than
       | to _read_ ; it's quite dense. Spivak's _Calculus_ , from what
       | I've heard, is magnificent. Probably best in the context of a
       | freshman honors class, but I can imagine that someone disciplined
       | could love it for self-study. Don't know Moor and Mertens.
        
       | [deleted]
        
       | jgwil2 wrote:
       | _How to Prove It_ by Velleman [0]. Should help with the
       | increasing emphasis on proofs.
       | 
       | [0] http://users.metu.edu.tr/serge/courses/111-2011/textbook-
       | mat...
        
       | mci wrote:
       | _The Cauchy-Schwarz Master Class: An Introduction to the Art of
       | Mathematical Inequalities_ is a graded problem book that will
       | teach them the principles and practice of mathematical proofs
       | like no other book. Here is its MAA review: [0]. A pirate PDF is
       | a Google search away. Take a look and see if you like it.
       | 
       | [0] https://www.maa.org/press/maa-reviews/the-cauchy-schwarz-
       | mas...
        
       | maurits wrote:
       | "Calculus made Easy" comes to mind. Probably not the best
       | suggestion here, but it is available on Gutenberg. [1]
       | 
       | [1]: https://www.gutenberg.org/files/33283/33283-pdf.pdf
        
       | scorecard wrote:
       | Art of Problem Solving is popular with the Math Olympiad types. I
       | see that others on this thread have recommended it already.
       | 
       | https://artofproblemsolving.com/
        
         | crawftv wrote:
         | I second this. Do t be scared off by it being for math
         | Olympiads. A lot the first volume deals with concepts across
         | much of the field. Lots of practice and ideas for logs,
         | exponents, word problems. And it comes with a solution guide
         | which helped me a lot.
        
       | ColinWright wrote:
       | A list:
       | 
       | https://www.topicsinmaths.co.uk/cgi-bin/sews.py?SuggestedRea...
       | 
       | For a single suggestion, "How to Think Like a Mathematician" by
       | Kevin Houston.
       | 
       | A second suggestion: "A Companion to Analysis" by Tom Korner.
       | 
       | But it depends a lot on whether you want books _about_ math, or
       | books _of_ math. It sounds like you want the latter ... at some
       | point I 'll get around to putting annotations on the choices in
       | the list that would help distinguish.
        
       | Phithagoras wrote:
       | "The Annotated Turing" by Christian Petzold made a huge
       | impression on me around that age. It doesn't discuss analysis but
       | it gives a nice walkthrough of Turing's classic paper where he
       | introduces the Turing machine and uses it to solve the
       | decidability problem of Diophantine equations.
       | 
       | Also, "Street Fighting Mathematics" from the MIT press
        
       | njkleiner wrote:
       | This might be a bit of a different take than the other comments
       | here, but I highly enjoyed reading Things to Make and Do in the
       | Fourth Dimension by Matt Parker when I first became interested in
       | maths.
        
       | jameshart wrote:
       | Have they worked through everything Martin Gardner ever wrote?
        
       | tobinfricke wrote:
       | _The Road to Reality_ by Roger Penrose.
       | 
       | https://www.nytimes.com/2005/02/27/books/review/the-road-to-...
        
         | Koshkin wrote:
         | This book is totally inappropriate for learning mathematics,
         | especially for a teenager. A _well-prepared_ layman, maybe, but
         | not a teenager who just wants a good introduction to the
         | subject.
        
           | mhh__ wrote:
           | It's an inspired book, but it's not a textbook.
           | 
           | It's purpose to me at least was as a guide to the mathematics
           | that was too difficult for me to understand straight away but
           | could be considered the end goal to a given study i.e. As
           | Symplectic Geometry is Analytical Mechanics.
        
           | analbumcover wrote:
           | I would be absolutely flabbergasted if a layman could get
           | through _Road to Reality_. Even those with an engineering or
           | computer science background would struggle considerably.
           | 
           | That said, it serves as a great overview of physics for
           | mathematicians and perhaps as very casual intro to twistor
           | theory for physicists.
        
       | nightchalk16 wrote:
       | http://discrete.openmathbooks.org/dmoi3.html
        
       | Tempest1981 wrote:
       | For broadening his view, and sparking some fun and joy of maths,
       | try "Humble Pi" by Matt Parker:
       | 
       | https://www.goodreads.com/book/show/39074550-humble-pi
        
       | bmking wrote:
       | Maybe this one "[The Pea And The Sun](https://www.amazon.com/Pea-
       | Sun-Mathematical-Paradox/dp/15688.... It reads in a nice flow and
       | shows theoretical math in an understandable way even though it
       | covers a very complex theorem.
        
       | tromp wrote:
       | Surreal Numbers by Knuth is great, although not related to
       | analyis/calculus:
       | 
       | https://www.amazon.com/Surreal-Numbers-Donald-Knuth/dp/02010...
        
       | laksmanv wrote:
       | Check out betterexplained.com
        
       | speedcoder wrote:
       | The Kingdom of The Infinite Number
        
       | gramie wrote:
       | You could check out Burn Math Class: https://www.amazon.com/Burn-
       | Math-Class-Reinvent-Mathematics/...
       | 
       | or Calculus Made Easy:
       | https://www.math.wisc.edu/~keisler/keislercalc-09-04-19.pdf
        
       | Tempest1981 wrote:
       | This may be too basic, but "The Magic of Math" by Arthur Benjamin
       | 
       | https://www.goodreads.com/book/show/24612214-the-magic-of-ma...
        
       | airstrike wrote:
       | A bit on the lighter side, I do recommend The Man Who Counted
       | which I read as a kid and absolutely loved
       | 
       | https://www.amazon.com/Man-Who-Counted-Collection-Mathematic...
       | 
       | I read the original in Portuguese but would assume it's just as
       | good in English, given overwhelmingly positive reviews on Amazon
       | 
       | See also https://en.wikipedia.org/wiki/The_Man_Who_Counted
       | 
       | It won't really teach him math per se, but if my experience is
       | any indication, it will get him hooked on developing intuition
       | and he'll find beauty in otherwise mundane topics such as
       | arithmetic. It's an incredibly engaging story aimed at younger
       | readers but fun for people of all ages - think Arabian Nights
       | with a character that loves math.
       | 
       | Come to think of it, I've got to buy it again and re-read it one
       | of these days
        
       | bobmaxup wrote:
       | Jan Gullberg - Mathematics: From the Birth of Numbers
       | 
       | https://www.amazon.com/gp/product/039304002X
       | 
       | Amazon.com Review What does mathematics mean? Is it numbers or
       | arithmetic, proofs or equations? Jan Gullberg starts his massive
       | historical overview with some insight into why human beings find
       | it necessary to "reckon," or count, and what math means to us.
       | From there to the last chapter, on differential equations, is a
       | very long, but surprisingly engrossing journey. Mathematics
       | covers how symbolic logic fits into cultures around the world,
       | and gives fascinating biographical tidbits on mathematicians from
       | Archimedes to Wiles. It's a big book, copiously illustrated with
       | goofy little line drawings and cartoon reprints. But the real
       | appeal (at least for math buffs) lies in the scads of problems--
       | with solutions--illustrating the concepts. It really invites
       | readers to sit down with a cup of tea, pencil and paper, and
       | (ahem) a calculator and start solving. Remember the first time
       | you "got it" in math class? With Mathematics you can recapture
       | that bliss, and maybe learn something new, too. Everyone from
       | schoolkids to professors (and maybe even die-hard mathphobes) can
       | find something useful, informative, or entertaining here.
       | --Therese Littleton
        
         | linguae wrote:
         | I remember reading this book in 11th grade and I absolutely
         | loved it. It made me appreciate math much more and showed me
         | the beauty of mathematics. It helped me overcome my math
         | anxiety.
        
         | ARandomerDude wrote:
         | Ordered, thank you for the recommendation!
        
       | murkle wrote:
       | Mathographics by Robert Dixon
       | https://www.amazon.co.uk/Mathographics-Robert-Dixon/dp/06311...
       | 
       | IIRC it explains how to make the pictures
        
       | screye wrote:
       | Probably not anyone's first choice, completely unknown in the US
       | and not truly a maths book, so much as a physics book.
       | 
       | Problems in general physics by IE Irodov [1] was one of those
       | "bang your head on the wall, but when you get it it's ecstasy"
       | kind of books for me.
       | 
       | I am not even sure if I would recommend it to every one. Maybe
       | masochists. But, looking back on it, I have some really fond
       | memories of locking myself in a room for 2 days to get a problem
       | that I felt oh-so-close to solving. Eventually getting it is
       | intensely rewarding.
       | 
       | It it right at the grade 10-12 level.
       | 
       | https://smile.amazon.com/Problems-General-Physics-I-Irodov/d...
        
       | tdsamardzhiev wrote:
       | I got Spivak as a first Calculus book and it felt a bit over my
       | head, but if one already has some knowledge and appreciation of
       | analysis, it'd be a great gift.
        
       | bhntr3 wrote:
       | I'm neither bright nor a teenager but I have been enjoying
       | working through Spivak's Calculus. I picked it up because it was
       | recommended as a good intro to pure mathematical thinking for
       | someone who knows calculus. I've found it challenging but it has
       | delivered on that promise.
       | 
       | There are many good recommendations here but I do think it will
       | be good for them to gain some exposure to pure mathematics. It's
       | different than what's typically taught in high school so they can
       | start to get an idea whether they actually want to be a
       | mathematician or instead focus on applied math in an engineering
       | discipline.
       | 
       | Also you're probably going to get a computing bias here. I found
       | the threads on physicsforums.com helpful so you might ask there
       | as well if you want a different bias.
       | (https://www.physicsforums.com/forums/science-and-math-textbo...)
        
       | npr11 wrote:
       | If they might enjoy something on computing, I'd recommend "The
       | Pattern On The Stone: The Simple Ideas That Make Computers Work"
       | by W.Daniel Hillis. It's very clear and well written, is quite
       | short but covers a lot and can be enjoyed cover to cover more
       | like a novel than a textbook.
        
       | dmd wrote:
       | https://en.wikipedia.org/wiki/How_to_Solve_It
        
       | alimw wrote:
       | I think the Princeton Companion would be a nice gift because it's
       | something they can dip into as they desire. With a more linear
       | book you may appear to confer an obligation to wade through it
       | from beginning to end. (I also really like the Companion and
       | although I've never splashed out on a copy for myself I wish
       | someone else would :) )
        
       | sgillen wrote:
       | If they have been exposed to diff eq at all I can recommend
       | Strogatz Nonlinear Dynamics and Chaos. It's a very interesting
       | subject, and the text is one of the most approachable I've come
       | across for any subject.
        
         | lanstin wrote:
         | Chaos by James Gleick is also a good intro to some chaos maths
         | and a great bio read, with the stories of Feigenbaum wrestling
         | with the new ideas.
        
       | JoshTriplett wrote:
       | As a child, I greatly enjoyed "Algebra the Easy Way",
       | "Trigonometry the Easy Way", and "Calculus the Easy Way". They
       | present each of the subjects not as already-invented concepts
       | that you just have to learn, but as things being _invented_ by a
       | fictional kingdom as they need them. I greatly prefer that style
       | over rote memorization; I can remember it better when I know how
       | to recreate it. Even more importantly, it encourages the mindset
       | that all of these things were _invented_ , and that other things
       | can be, too.
       | 
       | (Note: the other books in the "Easy Way" series do _not_ follow
       | the same style, and are just ordinary textbooks.)
       | 
       | Also, in a completely different direction, I haven't seen anyone
       | mention Feynman yet, and that will _definitely_ encourage a
       | broader view of mathematics and science.
       | 
       | Or, to go another angle, you might consider things like
       | "Thinking, Fast and Slow".
        
       | KenoFischer wrote:
       | Thought of another one: _Quantum Computing Since Democritus_ by
       | Scott Aaronson
        
       | uptownfunk wrote:
       | First read https://artofproblemsolving.com/news/articles/avoid-
       | the-calc...
       | 
       | By one of my early mathematics tutors in San Diego math circle
       | 
       | Then buy something like: Mathematical Proofs: A Transition to
       | Advanced Mathematics (3rd Edition) (Featured Titles for
       | Transition to Advanced Mathematics)
       | https://www.amazon.com/dp/0321797094/ref=cm_sw_r_cp_api_i_K4...
        
         | uptownfunk wrote:
         | Also art of problem solving vols 1-2 are now classics for that
         | age.
        
       | snicker7 wrote:
       | If you are planning on majoring in math (or related), why not get
       | a head start and get some textbooks corresponding to actual
       | courses you would like to take at the college/university you are
       | planning/hoping to attend?
        
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