# 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.