A computational approach to the Frobenius-Schur indicators of finite exceptional groups
A computational approach to the Frobenius-Schur indicators of finite exceptional groups
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有限异常群 Frobenius-Schur 指标的计算方法
DOI:
10.1142/s0218196719500681
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
C. R. Vinroot
中科院分区:
文献类型:
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作者:
S. Trefethen;C. R. Vinroot
We prove that the finite exceptional groups [Formula: see text], [Formula: see text], and [Formula: see text] have no irreducible complex characters with Frobenius–Schur indicator [Formula: see text], and we list exactly which irreducible characters of these groups are not real-valued. We also give a complete list of complex irreducible characters of the Ree groups [Formula: see text] which are not real-valued, and we show the only character of this group which has Frobenius–Schur indicator [Formula: see text] is the cuspidal unipotent character [Formula: see text] found by Geck.