Homology, Homotopy and Applications
Volume 11 (2009)
Extensions of Weyl and Schur functors
Pages: 27 – 48
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.
Ext-groups; Schur functor
2010 Mathematics Subject Classification
18G15, 20G10, 20G15