Seminar Page

Zoom Info

We use Zoom Meeting https://ksu.zoom.us/j/97023932358
Meeting ID: 970 2393 2358 For our meetings.

Winter Sessions

Regular Seminar talks will be Wednesdays (11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET)

Wednesday, April 21. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Andriy Haydys
Title: Topology of the blow up set for the Seiberg-Witten equations with two spinors.
Abstract:  An arbitrary sequence of the Seiberg-Witten monopoles with two spinors on a three-manifold may well be divergent due to the energy concentration along a one-dimensional subset Z, which I refer to as a blow up set. It turns out that blow up sets have interesting topological properties, for example in the case the background three-manifold is a rational homology sphere the Alexander polynomial of Z evaluated at t=-1 must vanish (under certain conditions, which I will describe in the talk). I will report about this and other related properties of blow up sets.

Wednesday, April 28. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Chris Herald
Title: TBD.
Abstract: TBD

Past Talks

Wednesday, April 14. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Josh Wang
Title: Floer and Khovanov homologies of band sums.
See the 4-14-2021 Seminar Abstract and Video

Wednesday, April 7. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: David Duncan
Title: Gluing mASD connections.
See the 4-7-2021 Seminar Abstract and Video

Wednesday, March 31. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Guillem Cazassus
Title: Hopf algebras, equivariant Lagrangian Floer homology, and cornered instanton theory.
See the 3-31-2021 Seminar Abstract and Video

Wednesday, March 24. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Dave Auckly
Title: Exotic Families of Diffeomorphisms and Embeddings.
See the 3-24-2021 Seminar Abstract and Video

Wednesday, March 17. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Aleksander Doan
Title: Counting pseudo-holomorphic curves in symplectic six-manifolds
See the 3-17-2021 Seminar Abstract and Video

Wednesday, March 10. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Cliff Taubes
Title: Morse theory, configuration spaces and Z/2 eigenfunctions for the
Laplacian on 2-sphere.
See the 3-10-2021 Seminar Abstract and Video

Wednesday, March 3. 11:30 PT = 12:30 MT = 1:30 CT = 2:30 ET
Speaker: Artem Kotelskiy
Title: The earring correspondence on the pillowcase.
See the 3-3-2021 Seminar Abstract and Video

Tuesday, February 23. 3:00 PT = 4:00 MT = 5:00 CT = 6:00 ET = 8:00 a.m. Next Day in Japan
Speaker: Tadayuki Watanabe
Title: Trivalent graphs and diffeomorphisms of some 4-manifolds
See the 2-23-2021 Seminar Abstract and Video

Tuesday, February 16. 3:00 PT = 4:00 MT = 5:00 CT = 6:00 ET = 9:30 a.m. Next Day in Adelaide
Speaker: David Baraglia
Title: Tautological classes of definite 4-manifolds
See the 2-16-2021 Seminar Abstract and Video

Tuesday, February 9. 3:00 PT = 4:00 MT = 5:00 CT = 6:00 ET
Speaker: Juanita Pinzon Caicedo
Title: Toroidal integer homology spheres have irreducible SU(2)-representations.

See The 2-9-2021 Seminar Abstract and Video

January, 2021
Mini course
Speakers:Hokuto Konno and Masaki Taniguchi

See The course webpage

Seminars from 2020

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