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Equivariant [formula omitted]-modules on 2 × 2 × 2 hypermatrices.

Authors :
Perlman, Michael
Source :
Journal of Algebra. Feb2020, Vol. 544, p391-416. 26p.
Publication Year :
2020

Abstract

Let V = C 2 ⊗ C 2 ⊗ C 2 be the space of 2 × 2 × 2 hypermatrices, endowed with the natural group action of GL = GL 2 (C) × GL 2 (C) × GL 2 (C). The category of GL-equivariant coherent left D -modules on V is equivalent to the category of representations of a quiver with relations. In this article, we give a construction of each simple object and study their GL-equivariant structure. Using this information, we go on to explicitly describe the corresponding quiver with relations. As an application, we compute all iterations of local cohomology with support in the orbit closures of V. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00218693
Volume :
544
Database :
Academic Search Index
Journal :
Journal of Algebra
Publication Type :
Academic Journal
Accession number :
139564335
Full Text :
https://doi.org/10.1016/j.jalgebra.2019.09.030