Transformation Groups Seminar

Speaker: Kumar Sannidhya Shukla

"The Weil model for the equivariant de Rham cohomology of $G$-manifolds, III"

Time: 09:30

Room: online

Last time we described the Weil model for circle actions and showed that it is isomorphic to polynomial ring with coefficients in invariant forms. This week, we will prove the Cartan-Weil Isomorphism for general connected Lie groups and determine the Cartan differential. Then we will determine the Cartan model for torus actions. Lastly, we will compute the equivariant cohomology for torus action on a point.

Meeting ID: 997 4840 9440 Passcode: 911104

Random Matrix Theory Seminar

Speaker: Nathan Pagliaroli (Western)

"Matrix integrals and Maps"

Time: 14:30

Room: MC 106

In this talk we will return our attention to matrix integrals and maps. I will review the definition and compare to the Feynman integrals previously discussed.

GAP Seminar

Speaker: Rasul Shafikov (Western)

"Survey of local theory of singular Levi-flat hypersurfaces"

Time: 10:30

Room: MC 108

Levi-flat hypersurfaces are important in the context of minimal sets of holomorphic foliations in complex projective spaces. It is well-known that closed smooth real analytic Levi-flats do not exist in $\mathbb C \mathbb P^n$ for $n>2$, and it is an open problem if such hypersurfaces exist in $\mathbb C \mathbb P^2$. On the other hand, singular real-analytic Levi-flats exist in any dimension, and we discuss some recent developments in this subject.

Algebra Seminar

Speaker: Senate meeting - no Algebra Seminar

"No Talk"

Time: 14:30

Room: