Past Seminars

September 2022- May 2023

Floer Homology and the Fukaya Category

We read A beginner's introduction to Fukaya categories by Denis Auroux and parts of Sectorial Descent for wrapped Fukaya categories  by Ganatra-Pardon-Shende.


Talk 1: 30 September An overview of Floer theory

Talk 2: 14 October Hutchings 1-2.2 Morse theory

Talk 3: 28 October Hutchings 2.3-2.4 and 4 Morse homology

Talk 4: 4 November Auroux 1.2-1.5 The Floer complex

Talk 5: 11 November Seidel 9 Products and A-infinity structure

Talk 6: 25 November GPS 3.1-3.3 Localization in the Fukaya category

Talk 7: 6 December Legendrian contact homology

Talk 8: 7 December Smith 5 Examples of Fukaya categories

Talk 9: 14 December Morse flow trees

Talk 10: 21 March GPS II Section 2 Liouville sectors

Talk 11: 5 April GPS II Section 2 Wrapped Fukaya category

Talk 12: 18 April GPS II Section 1 Theorems about the wrapped Fukaya category

Talk 13: 9 May Setup of Heegaard Floer homology

Talk 14: 16 May Cylindrical reformulation of Heegaard Floer



November 2022- April 2023


Microlocal Sheaf Theory: The Tamarkin Category


We read Quantitative Tamarkin Category by Jun Zhang.


Talk 1: 3 November An Overview of the Tamarkin Category

Talk 2: 17 November Viterbo 9.1-9.2 Singular support, propagation, and the Morse lemma

Talk 3: 1   December Zhang 3.1-3.5 The Tamarkin Category

Talk 4: 15   December Zhang 3.6-3.8 Torsion and the Separation Theorem

Talk 5: 25 April Zhang 4.1 Sheaf Quantization

Talk 6: Zhang 4.10 Gromov non-squeezing



February 2022- April 2022

Introduction to J-holomorphic curves

We covered Chapters 4-5 of  Lectures on Holomorphic Curves in Symplectic and Contact Geometry by Chris Wendl.

Talk 1: 9 February, Section 4.1 - Moduli space of closed curves - Ikshu Neithalath

Talk 2: 16 February, Section 4.2 - Riemann surfaces - Konstantin Wernli

Talk 3: 23 February, Section 4.3 - Fredholm regularity - Chris Kuo

Meeting 4: 2 March, Section 4.4.1 - Transversality for generic J

Meeting 5: 9 March, Section 4.4.2 - Dense implies generic

Meeting 6: 23 March, Sections 4.5-4.6 - Generic families and transversality of the evaluation map

Meeting 7: 30 March, Section 4.7 - Generic curves are immersed

Meeting 8: 6 April, Section 5.1 - Nonsqueezing

Meeting  9: 20 April, Sections 5.2-5.3 - Bubbling


September - December 2021

Introduction to J-holomorphic curves

We covered Chapters 1-3 of  Lectures on Holomorphic Curves in Symplectic and Contact Geometry by Chris Wendl.

Talk 1: 24 September, Section 1 - Introduction to symplectic geometry - Ikshu Neithalath (video)

Talk 2: 1 October, Sections 2.3-2.4 - The delbar operator - Emil Hössjer

Talk 3: 8 October, Sections 2.5-2.6.1 - Sobolev spaces - Tim Henke

Talk 4: 19 October, Section 2.6.2-2.6.3 - The basic delbar estimate - Calvin Pfeiffer (video)

Talk 5: 22 October, Sections 2.7-2.10 - Properties of J-holomorphic curves - Zhongyu Zhang

Talk 6: 29 October, Section 2.11 - Nonlinear regularity - Chris Kuo

Talk 7: 5 November, Sections 2.11-2.13 - Nonlinear regularity and local existence of curves - Chris Kuo, In IMADA Conference room (Ø18-509-2)

Talk 8: 12 November, Section 2.14 - Isolated intersections - Ikshu Neithalath

Talk 9: 19 November, Sections 2.15-2.16 - Multiply covered curves and positivity of intersections - Ikshu Neithalath

Talk 10: 26 November, Sections 3.1-3.2 - Banach manifolds - Emil Hössjer

Talk 11: 8 December, Sections 3.3-3.4 - Fredholm operators and Riemann-Roch - Zhongyu Zhang, In IMADA Conference room

Talk 12: mid-January, specific date TBD, Section 4.1 - Moduli space of closed curves