Stellmacher B. — A characteristic subgroup of Σ4-free groups
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Название: A characteristic subgroup of Σ4-free groups
Автор: Stellmacher B.
Аннотация:
Let S be a finite non-trivial 2-group. It is shown that there exists a nontrivial characteristic subgroup W(S) in S satisfying:W(S) is normal in H for every finite Σ4-free groups H withSεSyl2(H) andC H(O2(H))≤O2(H).
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