Koszul dual 2-functors and extension algebras of simple modules for GL_2

Miemietz, Vanessa and Turner, Will (2015) Koszul dual 2-functors and extension algebras of simple modules for GL_2. Selecta Mathematica-New Series, 21 (2). pp. 605-648. ISSN 1022-1824

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Abstract

Let p be a prime number. We compute the Yoneda extension algebra of GL2 over an algebraically closed field of characteristic p by developing a theory of Koszul duality for a certain class of 2 -functors, one of which controls the category of rational representations of GL2 over such a field.

Item Type:	Article
Uncontrolled Keywords:	koszul duality,extension algebra,gl2,2-functor
Faculty \ School:	Faculty of Science > School of Mathematics (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Algebra and Combinatorics (former - to 2024) Faculty of Science > Research Groups > Algebra, Logic & Number Theory
Depositing User:	Pure Connector
Date Deposited:	25 Jul 2014 15:20
Last Modified:	07 Nov 2024 12:37
URI:	https://ueaeprints.uea.ac.uk/id/eprint/49754
DOI:	10.1007/s00029-014-0164-8

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