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.
Citation
Marcin Chałupnik. "Extensions of Weyl and Schur functors." Homology Homotopy Appl. 11 (2) 27 - 48, 2009.
Information
Published: 2009
First available in Project Euclid: 1 September 2009
zbMATH: 1179.18008
MathSciNet: MR2529231
Subjects:
Primary:
18G15
,
20G10
,
20G15
Keywords:
Ext-groups
,
Schur functor
Rights: Copyright © 2009 International Press of Boston