## Archive for September, 2009

### Bolzano-Weierstrass rap

Posted by: **Dave Richeson** on September 29, 2009

### Is or an inclusive or or an exclusive or?

Posted by: **Dave Richeson** on September 27, 2009

### An applet for teaching the limit of a sequence

Posted by: **Dave Richeson** on September 22, 2009

### LaTeX now available in Google Docs

Posted by: **Dave Richeson** on September 18, 2009

### The nuts and bolts of writing mathematics

Posted by: **Dave Richeson** on September 17, 2009

### Cardinality of infinite sets, part 1: four nonstandard proofs of countability

Posted by: **Dave Richeson** on September 11, 2009

### Casting out nines

Posted by: **Dave Richeson** on September 9, 2009

### Mathematical spellcheck fail

Posted by: **Dave Richeson** on September 8, 2009

### Symbolic dynamics for nonhyperbolic systems

Posted by: **Dave Richeson** on September 6, 2009

### Tom Lehrer’s math songs

Posted by: **Dave Richeson** on September 5, 2009