Twisted Sequences of Extensions

2018/08/23 by Carlin, Kevin J.
#17B10 #17B55 #FOS: Mathematics #Representation Theory (math.RT)

paper · doi:10.48550/arxiv.1808.07936

Abstract

Gabber and Joseph introduced a ladder diagram between two natural sequences of extensions. Their diagram is used to produce a 'twisted' sequence that is applied to old and new results on extension groups in category O.

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