Previous Conferences & Workshops

Due to the pioneering work of Khovanov, there has been a lot of recent interest in certain knot homology theories. I will explain a program to construct these knot homology theories using braid group actions on derived categories of coherent sheaves...

The sign-rank of a real matrix M is the smallest rank of any real matrix whose entries have the same sign as the entries of M . We exhibit a 2^n x 2^n matrix computable by depth 2 circuits of polynomial size whose sign-rank is exponential in n . Our...

The disjointness function---determining if a number of sets share a common element---is a notorious example in communication complexity of a function which is hard, but it is hard to show it is hard. Determining both the randomized and quantum...

We review the de Branges theory of Hilbert spaces of entire functions. This theory gives a canonical form for a class of operators as a multiplication operator together with a generalized Fourier transform taking such an operator to a generalized...