## Archive for December 29th, 2008

### 46th Carnival of Mathematics

Posted by: **Dave Richeson** on December 29, 2008

### A 10-adic number that is a zero divisor

Posted by: **Dave Richeson** on December 29, 2008

A blog about math, puzzles, teaching, and academic technology

Posted by: **Dave Richeson** on December 29, 2008

Posted by: **Dave Richeson** on December 29, 2008