Great books about mathematics
wp.kjro.se
wp.kjro.se
http://press.princeton.edu/titles/8350.html
It's fun to just flip it open and start reading.
There error rate was much lower than in any other math book I've tried, but still much too high.
http://www.scribd.com/doc/65695685/Mary-L-Boas-Mathematical-...
(older edition of Arfken et al
http://www.scribd.com/doc/84183760/Arfken-G-B-Weber-H-J-Math...
http://www.amazon.com/dp/0802713319
A long time ago, a friend's mother was complaining to me that (high school) Math is a dry subject and she doesn't blame her otherwise intelligent son for not being able get interested and do well in it. I wish I knew of this book then - I know it cranked up my interest in Math ever since.
If someone is looking for a more lightweight introduction to Lakatos I can highly recommend "For and Against Method" which outlines his "arguments" with Feyerabend.
If you're not into science theory (imo) Lakatos is basically Popper++ (I think most people have heard of Popper)
"A stimulating excursion into pure mathematics aimed at "the mathematically traumatized," but great fun for mathematical hobbyists and serious mathematicians as well. Requiring only high school algebra as mathematical background, the book leads the reader from simple graphs through planar graphs, Euler's formula, Platonic graphs, coloring, the genus of a graph, Euler walks, Hamilton walks, and a discussion of The Seven Bridges of Konigsberg."
2. 'How to Solve It' by G. Polya (http://www.amazon.com/How-Solve-It-Mathematical-Princeton/dp...)
http://www.amazon.com/Mathematics-Its-Content-Methods-Meanin...
Math books rarely move from the Soviet Union to west, but this did and for really good reason. Just look at the list of writers included. So far I have not seen any math books that come even close to this. Reading this book together with the The Princeton Companion to Mathematics was real treat.
Question: I haven't read The Princeton Companion to Mathematics. How would you compare these two?
For a free alternative, check out: http://www.gutenberg.org/ebooks/33283
http://www.amazon.com/Mathematics-Nonmathematician-Dover-Boo...
I have not read it, but I have heard it recommended many times by knowledgeable educators.
Love and Math: The Heart of Hidden Reality
by Edward Frenkel
It begins with the author's struggle to learn the math behind
quantum physics in spite of cold-war era soviet educational obstacles
and leads bit by bit into the Langlands program, drawing connections
between group theory, number theory and harmonic analysis.It's definitely my favorite book of 2013.
http://www.amazon.com/Love-Math-Heart-Hidden-Reality/dp/0465...
Here are some examples of the kinds of books I mean, and you can find others by following Amazon recommendations from those:
http://www.amazon.com/Nuts-Bolts-Proofs-Fourth-Edition/dp/01... http://www.amazon.com/Mathematical-Proofs-Transition-Advance...
With math textbooks especially, it pays to look for a previous edition, as the current edition can be ridiculously expensive, and the previous edition might be only 20% of the price, with no significant differences between the two.
Also, don't get them for the Kindle, as Amazon doesn't seem capable of publishing a math book with lots of notation that doesn't also have tons of errors where symbols get incorrectly imported. I've bought at least 20 and yet have to see one that didn't have lots of incorrect symbols.
The book you want is "What is Mathematics?" [0] by Courant and Robbins.
[0] http://books.google.no/books?id=_kYBqLc5QoQC&printsec=frontc...
I am interested in pure mathematics mainly including logic, set theory, category theory, etc.
[1] An excellent example not mentioned by others here is also The Road to Reality by Roger Penrose. The sections on mathematics are very good, but ultimately leave the topic open-ended too soon.
If you're comfortable with calculus as a subject, for example, and want a "pure mathematics" approach, I recommend Michael Spivak's Calculus. If you've never worked through a pure math textbook from start to finish, that's a good start.
There's not that much interesting in the three subjects you listed — logic, set theory, and category theory — that doesn't depend on other subjects or a prior level of mathematical maturity. Category theory was originally invented to solve and categorize problems in algebraic topology, for example.
For example, I rather like mathematical logic and model theory, but you're going to have a rough time if you don't have a visceral, intuitive understanding of countability arguments and at least a handful of subjects you'd be reasoning "about." Unless you know the standard model of arithmetic, for example, how can you think about non-standard models? Without that, important results like the Löwenheim–Skolem theorem will likely seem contextless.
You are right in bringing countability arguments into the picture; I understand them only to some level. I would love to read a book that gives it a formal treatment. The following has been great for example:
https://news.ycombinator.com/item?id=6838917
Another one showed up on HN recently that I am still to read in full:
https://news.ycombinator.com/item?id=6966695
Thanks
Finally, cannot help but mention in praise, Colin Wright here on HN has been a good help before in clearing some of my doubts on the subject.
Here are some exercises to give you a sense of the flavor. If you find these exercises trivial then the textbook might not be for you. If you find them hard, well, welcome to math! :)
These are all before we get to any "calculus." Here "function" means a function of the real numbers.
1. Let f be a function that satisfies the conclusions of the Intermediate Value Theorem. Prove that if f takes on each value only once then f is continuous. Generalize this to the case where f takes on each value only finitely many times.
2. Prove that if n is even, then there is no continuous function f which takes on every value exactly n times.
3. A set A of real numbers is said to be sense if every open interval contains a point of A. Prove that if f is continuous and f(x) = 0 for all numbers x in a dense set A then f(x) = 0 for all x.
4. Find a function which is continuous at every irrational point and discontinuous at every rational point (and prove it as such)
Spivak's Calculus is used as a first-year calculus textbook at lots of schools, so if you find the above even a little challenging or strange-seeming then I'd recommend going through the book.
The last chapter of the textbook is a rigorous construction of the real numbers from the rationals using Dedekind cuts (referenced in the first link).
For those googling: there's a typo: sense => dense (http://en.wikipedia.org/wiki/Dense_set)
Umm... where? Not at Stanford, where we used a mainstream, much easier book. So does Princeton. Harvard is famous for having developed a "touchy-feely" calculus book.
Perhaps abroad? It is typical of calculus courses in the US that the students come with fairly weak backgrounds, and a major purpose is to expose and patch holes in the students' backgrounds in algebra and trigonometry.
Lots of places http://www.math.uga.edu/~pete/MATH2400F11.html
(Edit: I just read your HN bio and know you know the stylistic differences, etc. Sorry!)
Spivak is the first-year Honors Calculus textbook at my alma mater, the University of Chicago. Harvard is also famous for having the most difficult first-year math classes that use even more advanced textbooks like Rudin's Principles of Mathematical Analysis.
My HS background in mathematics was definitely "weak," too. My senior year was the first year my school district ever offered calculus of any stripe in its entire history and I still managed to handle Spivak my first year of college. I took the AP Calculus test on my own and got a 4/5. It's not that crazy.
I am reading third edition and it only has 12 not 13. Did that change in later editions?
http://www.reddit.com/r/calculusstudygroup/
if anyone is interested.
Other than that, if you want to go deeper into mathematics, just choose a topic and read on it. If your experience is mostly applied, consider something like topology which is often presented more formally than earlier math courses, or go back to the stuff you've already studied, but in a more pure context (for linear algebra, Axler's Linear Algebra Done Right and Halmos' Finite-Dimensional Vector Spaces; for calculus, Spivak as mentioned already and then an analysis book).
What is Mathematics? http://www.amazon.com/Mathematics-Elementary-Approach-Ideas-...