# Linear Algebra/Appendix

Mathematics is made of arguments (reasoned discourse that is, not crockery-throwing). This section is a reference to the most used techniques. A reader having trouble with, say, proof by contradiction, can turn here for an outline of that method.

But this section gives only a sketch. For more, these are classics: *Methods of Logic* by Quine, *Induction and Analogy in Mathematics* by Pólya, and *Naive Set Theory* by Halmos.