Folding actions
作者:
R. Lawther,
期刊:
Bulletin of the London Mathematical Society
(WILEY Available online 2016)
卷期:
Volume 25,
issue 2
页码: 132-144
ISSN:0024-6093
年代: 2016
DOI:10.1112/blms/25.2.132
出版商: Oxford University Press
数据来源: WILEY
摘要:
In this paper we begin by examining the action ofE6(q) on the cosets of the subgroupF4(q): we give the rank and subdegrees, and show that it is multiplicity‐free, that is, the constituents of the permutation character are all distinct. It is found that the suborbits correspond to conjugacy classes ofA2(q); we seek to explain this using the concept of ‘folding actions’. This enables the related action of2E6(q2onF4(q) to be treated with little extra effort.
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