Some remarks on Ext groups

2009/05/25 by Steen Ryom-Hansen, Ryom-Hansen, Steen
Mathematics · #16G99 #20G05 and 20G10 #FOS: Mathematics #Representation Theory (math.RT) #math.RT #msc:16G99 #msc:20G05 #msc:20G10

paper · pdf · doi:10.48550/arxiv.0905.4083

Appendix to "On the good filtration dimension of Weyl modules for a linear algebraic group" by A.E. Parker, arXiv:math/0507552; in J. reine angew. Math, 2003

arxiv created 2009/05/27 · arxiv updated 2009/12/01

Abstract

We calculate certain ext-groups between modules for a linear algebraic group. The results are in agreement with the Lusztig conjecture.

Citations

• On the good filtration dimension of Weyl modules for a linear algebraic group

Related

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• Bounding Ext for modules for algebraic groups, finite groups, and quantum groups
• Ext vanishing and infinite Auslander-Buchsbaum
• Ext Groups between Irreducible GL_n(q)-modules in Cross Characteristic
• Homological splitting results for modules over Leibniz algebras