Math Awareness Month
An anonymous reader writes: April is Mathematics Awareness Month. Mathematics of the Cosmos is the 2005 theme: Mathematics is at the core of our attempts to understand the cosmos at every level: Riemannian geometry and topology furnish models of the universe, numerical simulations help us to understand large-scale dynamics, celestial mechanics provides a key to comprehending the solar system, and a wide variety of mathematical tools are needed for actual exploration of the space around us."
Some of my favorites:
"Topics in Algebra" by Herstein
"Topology" by Hocking and Young [Dover]
"Counterexamples in Topology" by Steen & Seebach [Dover]
"A Mathematical Introduction to Logic" by Enderton
"Galois Theory" by Stewart