Extensions of Weyl and Schur functors
Marcin Chałupnik
Source: Homology Homotopy Appl. Volume 11, Number 2 (2009), 27-48.
Abstract
We study Ext-groups in the category of strict polynomial functors. The main result is a computation of the Ext-groups between twisted Weyl and Schur functors for a large class of Young diagrams.
Primary Subjects: 18G15, 20G10, 20G15
Keywords: Ext-groups; Schur functor
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Links and Identifiers
Permanent link to this document: http://projecteuclid.org/euclid.hha/1251832591
Mathematical Reviews number (MathSciNet):
MR2529231
Homology, Homotopy and Applications
