Invented on May 18th, 2007 (by Oleg Ivrii and Zavosh Amir-Khosravi) a "rigorous" defintion of CoolStuff is against our philosophy, so I will only give some guidelines what qualifies stuff to be cool:

- The process of CoolStuff is to learn mathematics by application. Here at CoolStuff, we believe that to understand a subject is to see it used in action.
- By its nature, it is elementary, simple, elegant and intuitive. Sometimes, it could even be accessible to highschool students if it did not use a simple fact from topology or abstract algebra. Nevertheless, CoolStuff benefits from its highly intelligent audience.
- CoolStuff does not belong to a single subject, it draws from all of mathematics. By its nature, it cannot be found in a university classroom, which tries to partition all of mathematics into "subjects".
- CoolStuff should be able to stand by itself as a final result, with no applications in mind (even though, applications make it even more cool).
- When it is a well-known theory, the focus is on showing examples rather than dunking theorems one by one.

Of course, classical university education has its merits too :-).

*CoolStuff is now organized by Yuri Burda.* Contact (in person, or by email) if you are interested in giving a talk.

Previous CoolStuff Seminars can be found at the following link: http://www.math.toronto.edu/oleg/css/coolstuff.html