- Notes and pages on topics in math
- Review sheets for various math courses
- Math-related organizations and Web sites
- Free mathematical software

*Note:* I only link to pages that I use myself. If you want a page with dozens of math-related links, you could just do an online search on "math"; I'm being selective to avoid overwhelming people with too many choices. But the fact that I haven't linked to a page doesn't mean I think badly of it.

*[September 6, 2020]* I've restored some of the notes, and I expect all the calculus notes will be available within the next couple of weeks. I'm revising the linear algebra notes, so I may wait before putting them back up again. Some of the older notes (differential equations, college algebra) need a lot of revision, and won't be online for quite a while. I put the topology notes back up temporarily because someone asked for them, but may take them down for revision as well. The videos will probably not be online again for a long time.

*[August 20, 2020]* I had to take the notes down last week, because I wasn't sure I'd be allowed to maintain these pages after I retired on August 14. Information Technology told me I can continue to keep my pages up here, so I will restore them bit by bit (though it may take some time). I had to take down the videos for the notes as well; I will need to rebuild a lot of them, so it will be much longer before they are available again.

The notes are web pages, usually accompanied by PDF files for printing.

I appreciate hearing about mistakes, which I'll correct as soon as I can. Some of the notes are very incomplete; there may be a few worked-out examples, with little exposition.

- Calculus
- Notes on calculus 1 - Single variable calculus: Limits, derivatives and differentiation, applications of derivatives, integrals and antiderivatives
- Notes on calculus 2 - Single variable calculus: integration techniques, applications of integration, numerical series and power series, parametric equations, polar coordinates
- Notes on calculus 3 - Multivariable calculus: Vectors and vector algebra, lines and planes, curves in the plane and in space, calculus of functions of several variables, multiple integrals, vector calculus (Green's theorem, the Divergence Theorem, Stokes' theorem)

- Math proof
- Linear algebra (under revision)
- Abstract algebra
- Elementary number theory
- Notes on elementary number theory
- (GIMPS) The Great Internet Mersenne Prime Search. Use your computer to help find the next Mersenne prime.

- Topology
- Notes on point-set topology (PostScript) [These have not been revised in a long time!]

The Review Sheets contain practice problems with solutions. Usually, there are 3 review sheets corresponding to the three tests I gave during the term, and a final review sheet for the final exam. They are arranged by course, and I'll try to put more of them online in the future.

Note that if you're taking a course, your instructor will probably cover different topics than I did, and will teach those topics in different ways. Be sure you know what your instructor expects!

- The American Mathematical Society is a professional organization whose primary focus is on research.
- The Mathematical Association of America is a professional organization whose primary focus is on teaching.
- The TeX Users Group is devoted to TeX, a computer typesetting system. TeX is the
*de facto*standard for technical typesetting among professional mathematicians. - The Front for the Mathematics ArXiv is the largest preprint server for the mathematical sciences.

- Maxima is a GPL-ed symbolic mathematics program. It does (among other things) algebra, calculus, and graphing in 2 and 3 dimensions.
- GAP is a free system for doing computational discrete algebra. It is best known as a tool for doing computational group theory.