Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4587785 | Journal of Algebra | 2008 | 33 Pages |
Abstract
We construct projective resolutions for simple modules over the Borel subalgebras S+(2,r) and S+(3,r) of the Schur algebras S(2,r) and S(3,r) over a field of positive characteristic. In the case S+(2,r) we get a minimal projective resolution. We find also projective resolutions of minimal possible length for Weyl modules over the Schur algebra S(2,r), corresponding to the regular weights.
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