## Posts Tagged ‘cardinality’

### Countability of the rationals drawn using TikZ

Posted by: **Dave Richeson** on April 16, 2013

### What is the cardinality of the Euclidean topology?

Posted by: **Dave Richeson** on February 12, 2010

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

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