ICTP/IGAP Algebraic Geometry Seminar - Wednesday, 6 April, at 16:00 (Lothar Goettsche)/hybrid seminar

[ICTP Math Section]

ICTP/IGAP Algebraic Geometry Seminar on "Vertical Vafa-Witten invariants 
and nested Hilbert schemes"

Starts 6 April 2022 16:00
Ends 6 April 2022 17:00
Central European Time

Presence: Leonardo Building - Luigi Stasi Seminar Room

Online:
Register in advance for this meeting:
https://zoom.us/meeting/register/tJMvde2vqj8vGdSw7PIRCRk0qCAQ17hkaDQr
After registering, you will receive a confirmation email containing 
information about joining the meeting.

Speaker Lothar Goettsche (ICTP)

Abstract: We state the structure theorem of Laarakker for the vertical 
Vafa-Witten invariants of a projective surface S. We introduce nested 
Hilbert schemes (an incidence variety in products of Hilbert schemes of 
points and curves on the surface S), and their relation to vertical 
components of Vafa-Witten moduli spaces. We describe how the vertical 
Vafa-Witten invariants can be computed in terms of nested Hilbert 
schemes. We sketch the proof of Laarakker's structure theorem.

/This will be a hybrid seminar. All are very welcome to join either 
online or in person (if provided with a green pass). Venue: Luigi Stasi 
Seminar Room (ICTP Leonardo Da Vinci Building), for those wishing to 
attend in person./

https://indico.ictp.it/event/9928/

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