Homomorphisms and Higher Extensions for Schur algebras and symmetric groups

Details Homomorphisms and Higher Extensions for Schur algebras and symmetric groups Homomorphisms and Higher Extensions for Schur algebras and symmetric groups

2005-08-26

arxiv.org/abs/math/0508521v1

Mathematics

Representation Theory

19 pages, 1 figure

Scientific paper

This paper surveys, and in some cases generalises, many of the recent results
on homomorphisms and the higher Ext groups for q-Schur algebras and for the
Hecke algebra of type A. We review various results giving isomorphisms between
Ext groups in the two categories, and discuss those cases where explicit
results have been determined.

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