cohomology of dg-categories, graded centers and spectral sequences

Plática dada por Frank Neumann (University of Leicester, Unidted Kingdom) en el evento Algebraic Geometry in 2017 el martes 28 noviembre del 2017 en Oaxaca, México.

Abstract:
Abstract: The Hochschild cohomology of a differential graded , or a differential graded category, admits a natural map to the graded center of its homology category: the characteristic homomorphism. We interpret it as an edge homomorphism in a spectral sequence. This gives a conceptual explanation of the failure of the characteristic homomorphism to be injective or surjective, in general. To illustrate this, we discuss coherent sheaves over algebraic curves, as well as examples related to free loop .

Video de la plática
https://youtu.be/9W8JU2OV3_s

Foto de miniatura del video
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Frank Neumann en:

University of Leicester
https://www2.le.ac.uk/departments/mathematics/extranet/staff-material/staff-profiles/fn8

Mathematics Genealogy Project
https://www.genealogy.math.ndsu.nodak.edu/id.php?id=27719

Google Scholar
https://scholar.google.com/citations?user=11lcP4oAAAAJ&hl=en

arXiv
https://arxiv.org/find/math/1/au:+Neumann_F/0/1/0/all/0/1

ResearchGate
https://www.researchgate.net/profile/Frank_Neumann9

Otras pláticas del evento Algebraic Geometry in Mexico 2017
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Otras pláticas del evento Algebraic Geometry in Mexico 2016
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Otras pláticas del evento Algebraic Geometry in Mexico 2015
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