"A knot invariant from algebraic geometry" Sabin Cautis (Rice University) Abstract: We describe a doubly graded homology which is a knot invariant and is constructed by looking at coherent sheaves on certain algebraic varieties. These varieties are easy to define but we'll try to give some motivation for their construction. Finally, we conjecture how this invariant is equivalent to Khovanov homology. This is joint work with Joel Kamnitzer.