Presented by: 
Arun Ram, University of Melbourne
Tue 26 Nov, 11:00 am - 12:00 pm
Room 207, Building 05

A Schubert polynomial is what comes out of the black box called "cohomology" when you put a Schubert variety in.  As technology gets more advanced generalised cohomologies (say T-equivariant elliptic cohomology) produce new Schubert polynomials, ... or do they? It seems that the connecting cable for the actual Schubert varieties doesn't quite fit the socket in the new cohomologies and the old workaround of replacing the input by a Bott-Samelson variety no longer produces the right answer. But the new icohomologies definitely have some killer apps so it's hard to resist them.