Title	A splitting principle for cohomological invariants of reflection groups
Creator	Gille, Stefan
Publisher	Banff International Research Station for Mathematical Innovation and Discovery
Date Issued	2019-11-15T10:16
Description	Cohomological invariants play an important role in the classification of G-torsors, where G is an algebraic group over a field. However these invariants are hard to compute. In case of a Weyl group G they have been recently computed (with some restrictions on the base field). A crucial role in this computation is played by a splitting principle, which roughly says that an invariant of a Weyl group is determined by its restriction to elementary abelian 2-subgroups generated by reflections. In the talk I will discuss the generalization of this principle to orthogonal reflection groups. (joint work with Christian Hirsch)
Extent	56.0 minutes
Subject	Mathematics; Algebraic geometry; Associative rings and algebras
Type	Moving Image
File Format	video/mp4
Language	eng
Notes	Author affiliation: University of Alberta
Series	BIRS Workshop Lecture Videos (Banff, Alta)
Date Available	2020-05-14
Provider	Vancouver : University of British Columbia Library
Rights	Attribution-NonCommercial-NoDerivatives 4.0 International
DOI	10.14288/1.0390488
URI	http://hdl.handle.net/2429/74435
Affiliation	Non UBC
Peer Review Status	Unreviewed
Scholarly Level	Faculty
Rights URI	http://creativecommons.org/licenses/by-nc-nd/4.0/
Aggregated Source Repository	DSpace

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