Charakterformeln für Kipp-Moduln über Kac-Moody-Algebren

Soergel, Wolfgang

doi:10.1090/S1088-4165-97-00017-4

Author: Wolfgang Soergel
Journal: Represent. Theory 1 (1997), 115-132
MSC (1991): Primary 17B70, 17B67, 17B37
DOI: https://doi.org/10.1090/S1088-4165-97-00017-4
Published electronically: May 9, 1997
English translation: Represent. Theory 2 (1998)
MathSciNet review: 1445716
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Abstract: We show how to express the characters of tilting modules in a (possibly parabolic) category ${\mathcal O}$ over a Kac-Moody algebra in terms of the characters of simple highest weight modules. This settles in lots of cases Conjecture 7.2 in Kazhdan-Lusztig-Polynome und eine Kombinatorik für Kipp-Moduln, Represent. Theory (1997), by the author, describing the character of tilting modules for quantum groups at roots of unity.

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