## Northern California Symplectic Geometry Seminar, 2022-2023 Berkeley - Davis - Santa Cruz - Stanford

The Northern California Symplectic Geometry Seminar usually meets on the first Monday of each month. Established in 1992, the Andreas Floer Memorial Lecture usually takes place in the Fall, during the first meeting of the seminar.

For slides or videos of the talks (when available), please click on link after the title of the talk.

### Upcoming NCSGS meetings

Monday Dec 12, 2022, @ Berkeley in person, TBA (note this will be held the second Monday in December)

Monday Feb 6, 2022, @ Stanford in person, TBA.

### Previous NCSGS meetings

Monday Nov 7, 2022, @ Stanford, in person, room 383N

2:30pm-3:30pm, room 383N
Andreas Floer Memorial Lecture
Ivan Smith (Cambridge University), Quantum (Morava) K-theory

Abstract: Quantum cohomology is a well-known enumerative invariant of symplectic manifolds. For smooth projective varieties, quantum K-theory was defined around twenty years ago using the `virtual structure sheaf'. Recently we have constructed quantum K-theory, and quantum Morava K-theories, for general compact symplectic manifolds. We will describe something of this theory. This talk reports on joint work with Mohammed Abouzaid and Mark McLean.

4pm-5pm, room 383N
Egor Shelukhin (University of Montreal), Exact Lagrangians, fixed points, and flux

Abstract: We describe the interrelation between the exactness of Lagrangian graphs, the strong Arnol'd conjecture, and the flux conjectures. In particular we answer a question of Lalonde-McDuff-Polterovich and make new progress on the $$C^0$$ flux conjecture. This is joint work in progress with Marcelo Atallah.

Organizers: Roger Casals (Davis), Yasha Eliashberg (Stanford), Dmitry Fuchs (Davis), Viktor Ginzburg (Santa Cruz), Michael Hutchings (Berkeley), Eleny Ionel (Stanford), Richard Montgomery (Santa Cruz), Vivek Shende (Berkeley), Laura Starkston (Davis), Katrin Wehrheim (Berkeley), Alan Weinstein (Berkeley/Stanford).