Math Stuff
God's Language
Math is the foundation of science.
Nick's Mathematical Puzzles
Each one is a different challenge, some easy, some hard and some I had to think hard about it AFTER peeking at the answer. Way fun.
Integer Sequences
Got a favorite sequence of numbers. Plug them in here. Amazing connections between disparate mathematical disciplines were unearthed when their sequences coincided... Maintained by N J A Sloane (AT&T Labs Research)