Either January 14th or February the 11th, I’ll be leading a discussion on the Poincare Conjecture. It will be the first of a series based on the Millennium problems, a group of seven problems which the Clay Institute put a million dollar bounty on, in the hopes that they would be solved by the end of the century. 228 more words

## Tags » Poincaré Conjecture

#### Hyperbolic Plane Example

Few months ago I gave a lecture on Non-euclidean geometry and it was a bit difficult for me to give audience an example of hyperbolic surface from their day-to-day life. 236 more words

# Millennium Problems

## Yang–Mills and Mass Gap

Experiment and computer simulations suggest the existence of a “mass gap” in the solution to the quantum versions of the Yang-Mills equations. 377 more words