For a finite group G, let k G denote the number of conjugacy classes of G. We prove that a simple group of Lie type of untwisted rank l over the field of q Ž . l elements has at most 6 q conjugacy classes. Using this estimate we show that for Ž . Ž . 10 n completely reducible subgroups G of GL n, q
On the Number of Conjugacy Classes of π-Elements in a Finite Group
✍ Scribed by Burkhard Külshammer; Geoffrey R. Robinson
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 136 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0021-8693
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✦ Synopsis
Let G be a finite group and a set of primes. In this note we will prove Ž . two results on the local control of k G, , the number of conjugacy w x classes of -elements in G. Our results will generalize earlier ones in 8 , w x w x 9 , and 3 .
Ž . Ž . In the following, we denote by F F G the poset of all solvable -sub-࠻ Ž .
Ž . Ä 4 Ž . groups of G and set F F G [ F F G _ 1 . For V g F F G , we denote by
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