Semisimple symplectic characters of finite unitary groups

被引:2
作者
Srinivasan, Bhama [2 ]
Vinroot, C. Ryan [1 ]
机构
[1] Coll William & Mary, Dept Math, Williamsburg, VA 23187 USA
[2] Univ Illinois, Dept Math Stat & Comp Sci MC 249, Chicago, IL 60607 USA
基金
美国国家科学基金会;
关键词
Semisimple character; Frobenius-Schur indicator; Finite unitary group; Finite reductive group; REAL-VALUED CHARACTERS; REDUCTIVE GROUPS;
D O I
10.1016/j.jalgebra.2011.08.012
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let G = U(2m, F-q2) be the finite unitary group, with q the power of an odd prime p. We prove that the number of irreducible complex characters of G with degree not divisible by p and with Frobenius-Schur indicator -1 is q(m-1). (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:459 / 466
页数:8
相关论文
共 10 条
[1]  
[Anonymous], PURE APPL MATH NY
[2]  
Cabanes M., 2004, NEW MATH MONOGR, V1
[3]   REPRESENTATIONS OF REDUCTIVE GROUPS OVER FINITE-FIELDS [J].
DELIGNE, P ;
LUSZTIG, G .
ANNALS OF MATHEMATICS, 1976, 103 (01) :103-161
[4]  
Digne F., 1991, London Math. Soc. Student Texts, V21
[5]   THE BLOCKS OF FINITE GENERAL LINEAR AND UNITARY GROUPS [J].
FONG, P ;
SRINIVASAN, B .
INVENTIONES MATHEMATICAE, 1982, 69 (01) :109-153
[6]   Extending real-valued characters of finite general linear and unitary groups on elements related to regular unipotents [J].
Gow, Rod ;
Vinroot, C. Ryan .
JOURNAL OF GROUP THEORY, 2008, 11 (03) :299-331
[7]   CHARACTERS OF FINITE UNITARY GROUPS [J].
LUSZTIG, G ;
SRINIVASAN, B .
JOURNAL OF ALGEBRA, 1977, 49 (01) :167-171
[8]  
Navarro G, 2008, T AM MATH SOC, V360, P2443
[9]   ON THE SCHUR-INDEXES OF REDUCTIVE GROUPS-II [J].
OHMORI, Z .
QUARTERLY JOURNAL OF MATHEMATICS, 1981, 32 (128) :443-452
[10]  
Vinroot CR, 2010, OSAKA J MATH, V47, P523