Spring 2025 Algebraic geometry learning seminar:
The P = W conjecture

Time: Friday 1:45 – 3:00pm.
Place: 507 Math Building.
Some references:

Organizers: Tommaso Botta, Hanlin Cai, Andrés Ibáñez Núñez, and Yoonjoo Kim.

Scheduled talks:

Date Speaker Topic
Jan 24 Tommaso Botta
Overview of the P = W conjecture
Jan 31
Yoonjoo Kim
Mixed Hodge structures
Feb 7 Amal Mattoo Perverse sheaves I (consturctible sheaves, perverse sheaves, and the six-functor formalism)
Feb 13* James Hotchkiss
Character varieties and the curious hard Lefschetz theorem
Feb 21 Patrick Lei
Perverse sheaves II (the decomposition theorem, relative hard Lefschetz, etc.)
Feb 28 Sofia Wood
Higgs bundles I
Mar 7 -

Mar 14 Andrés Ibáñez Núñez
Higgs bundles II
Mar 21 (Spring recess)
Mar 28 Michael Thaddeus Higgs bundles III
Apr 4 Michael Thaddeus Higgs bundles IV
Apr 11 Hanlin Cai
Ngo's support theorem
Apr 18
Caleb Ji
Maulik-Shen's proof I (vanishing cycles)
Apr 25 Kuan-Wen Chen
Maulik-Shen's proof II (strong perversity of Chern classes)
May 2
Maulik-Shen's proof III (global Springer theory and the parabolic support theorem)
May 8*
Maulik-Shen-Yin's proof