Sergei Gukov: A piece of 21st century mathematics that didn't make it into 20th century physics

This lecture will be about the physics of new knot invariants invented by Khovanov, Rozansky, Ozsvath, Szabo, Rasmussen, and other
mathematicians circa 2000. The key ingredients of the proposed physical framework involve standard tools from gauge theory and string theory. It leads to a wealth of generalizations and comes with a few surprising features.