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Further Reflections on Thompson's Conjecture

โœ Scribed by Guiyun Chen


Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
85 KB
Volume
218
Category
Article
ISSN
0021-8693

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โœฆ Synopsis


ลฝ . ร„

< Let G be a finite group and let N G s n g N G has a conjugacy class C,

We have proved previously that: If M is a sporadic simple group or a simple group having its prime graph with at least three prime graph components, then Thompson's conjecture is correct. In this paper, we shall prove: ลฝ .

ลฝ . MAIN THEOREM. Let G be a finite group with Z G s 1 and M s G q or 2 ลฝ .

ลฝ . ลฝ . G 2 ะˆ, where q G 2, such that N G s N M . Then G ( M.


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ลฝ . ร„ < Let G be a finite group and N G s n g N G has a conjugacy class C, such < < 4 that C s n . Professor J. G. Thompson has conjectured that ''If G be a finite ลฝ . ลฝ . group with Z G s 1 and M a nonabelian simple group satisfying that N G s ลฝ . N M , then G ( M.'' We have proved that if M is a s

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Let p be a prime divisor of the order of a finite group G. Thompson (1970, J. Algebra 14, 129-134) has proved the following remarkable result: a finite group G is p-nilpotent if the degrees of all its nonlinear irreducible characters are divisible by p (in fact, in that case G is solvable). In this