Previous Conferences & Workshops

Oct
02
2015

Joint IAS/Princeton/Columbia Symplectic Geometry Seminar

Non-trivial Hamiltonian fibrations via K-theory quantization
3:30pm|S-101

We produce examples of non-trivial Hamiltonian fibrations that are not detected by previous methods (the characteristic classes of Reznikov for example), and improve theorems of Reznikov and Spacil on cohomology-surjectivity to the level of...

Oct
02
2015

Joint IAS/Princeton/Columbia Symplectic Geometry Seminar

Lagrangian cobordism: what we know and what is it good for
2:00pm|S-101

I will describe how the notion of Lagrangian cobordism, introduced by Arnold in 1980, offers a systematic perspective on the study of Lagrangian topology. There are three aspects that will be emphasized: the relations with the triangulated structure...

Oct
01
2015

Joint IAS/Princeton University Number Theory Seminar

Motivic cohomology actions and the geometry of eigenvarieties
David Hansen
4:30pm|S-101

Venkatesh has recently proposed a fascinating conjecture relating motivic cohomology with automorphic forms and the cohomology of arithmetic groups. I'll describe this conjecture, and discuss its connections with the local geometry of eigenvarieties...