by Chris E | Feb 6, 2013 | seminars: spring 2013

Kuratowski’s Theorem may be stated as follows: Let be a graph. is nonplanar if and only if contains a subdivision of either or as a subgraph. In the talk, we use the following definition of a graph: Let and be sets. is a graph if and only if it satisfies the...
by Chris E | Jan 23, 2013 | Fun Math

http://xkcd.com/ (maintained by Randall Munroe) is a fantastic website for mathematics, physics, and computer science themed cartoons. I would also recommend clicking the “What If?” at the top-left corner of the page. If anyone knows of any other good...
by Chris E | Sep 11, 2012 | Math Software

Geometer’s Sketchpad is a useful tool for visualizing euclidean constructs, as well as a multitude of other things. However, it is also expensive, with a new license running around $70, and renewals at $50. Luckily, there is an open source version of the...