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Total positivity and conjugacy classes

2022/01/29 by He, Xuhua, Lusztig, George
#15B48 #20E45 #20G20 #FOS: Mathematics #Representation Theory (math.RT)

paper · doi:10.48550/arxiv.2201.12479

Abstract

In this paper, we study the interaction between the totally positive monoid G≥ 0 attached to a connected reductive group G with a pinning and the conjugacy classes in G. In particular, we study how a conjugacy class meets the various cells of G≥0. We also state a conjectural Jordan decomposition for G≥0 and prove it in some special cases.

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