Past Events

(Joint work with C. Procesi and M.Vergne) Let G be a compact Lie group with Lie algebra g. Given a G-manifold M with a G equivariant one form w we consider the zeroes M^{0} of the corresponding moment map and define a map, called innitesimal index...

This is a working seminar on the homotopy theory of moduli spaces

Most tissues are hierarchically organized into lineages, which are sets of progenitor-progeny relationships where the cells differ progressively in their character due to differentiation. It is increasingly recognized that lineage progression occurs...

There is an extensive applied mathematics literature developed for problems in the biological and physical sciences. Our understanding of social science problems from a mathematical standpoint is less developed, but also presents some very...

In applications ranging from energy harvesting to toxin detection, nanocrystalline materials promise to yield revolutionary new technologies. The ability to produce nanomaterials with controlled morphologies remains a difficulty, however. Producing...

Abstract: We will first present the algebras A(K) associated with a number field K which were introduced and analyzed in joint work with X.Li. The computation of their K-theory is a challenging problem. It turns out to be determined by the...

I am going to explain how representations of the braid groups endowed with a compatible symplectic form give rise to link invariants with values in the Witt ring of the field considered. The construction makes use of Maslov indices. In the end, using...

Saddle-point linear systems arise in many applications involving problems with constraints. When the underlying matrices are large and sparse, iterative solvers are typically used. A number of Krylov subspace solvers can be used, but they do not...

This is a working seminar on the homotopy theory of moduli spaces