[Dottorcomp] Longitudinal Algebra and Geometry Open ONline Seminar (LAGOON) (Cologne-Pavia)

[Lidia Stoppino]

On behalf of Frank Neumann:

Dear colleagues,

 In the upcoming Longitudinal Algebra and Geometry Open ONline Seminar (LAGOON) (Cologne-Pavia) on this Wednesday 24 Apr at 2pm (time zone Berlin, Paris, Rome (UTC+2)) the speaker will be:
 Pieter Belmans   (University of Luxembourg):   Hochschild cohomology of Hilbert schemes of points
 Abstract. I will present a formula describing the Hochschild cohomology of symmetric quotient stacks, computing the Hochschild–Kostant–Rosenberg decomposition of this orbifold. Through the Bridgeland–King–Reid–Haiman equivalence this allows the computation of Hochschild cohomology of Hilbert schemes of points on surfaces. These computations explain how this invariant behaves differently from say Betti or Hodge numbers, which have been studied intensively in the past 30 years, and it allows for new deformation-theoretic results. This is joint work with Lie Fu and Andreas Krug.
 The Zoom link is
 https://uni-koeln.zoom.us/j/91875528987?pwd=US8wdjNrWjl5dXNQSVRzREhoRE1PUT09

Meeting ID: 918 7552 8987
Password: LAGOON

Everyone is very welcome to join!
Best regards,
Severin Barmeier (Cologne)
Frank Neumann (Pavia)
Sibylle Schroll (Cologne)
For more information about the LAGOON webinar, future talks and for titles and video recordings of past seminars see the LAGOON website:

https://sites.google.com/view/lagoonwebinar
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Lidia Stoppino
Dipartimento di Matematica
Università di Pavia
Via Ferrata 5
27100 Pavia
Ufficio C.07 (primo piano)
Tel. +39 0382 985624
e-mail: lidia.stoppino a unipv.it 
pagina web: http://www.stoppino.it