QUARTERLY JOURNAL OF MATHEMATICS
|
2025年
/
76卷
/
01期
关键词:
PROJECTIVE-REPRESENTATIONS;
WEIL REPRESENTATIONS;
MINIMAL DEGREES;
CHARACTERS;
THEOREM;
ORDERS;
D O I:
10.1093/qmath/haaf001
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Let H be a nonabelian finite simple group. Huppert's conjecture asserts that if G is a finite group with the same set of complex character degrees as H, then $G\cong H\times A$ for some abelian group A. Over the past two decades, several specific cases of this conjecture have been addressed. Recently, attention has shifted to the analogous conjecture for character codegrees: if G has the same set of character codegrees as H, then $G\cong H$. Unfortunately, both problems have primarily been examined on a case-by-case basis. In this paper and the companion [15], we present a more unified approach to the codegree conjecture and confirm it for several families of simple groups.