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Schur Zassenhaus Theorem
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High Quality Content by WIKIPEDIA articles! The Schur Zassenhaus theorem is a theorem in group theory which states that if G is a finite group, and N is a normal subgroup whose order is coprime to the order of the quotient group G / N, then G is a semidirect product of N and G / N. An alternative statement of the theorem is that any normal Hall subgroup of a finite group G has a complement in G. It is clear that if we do not impose the coprime condition, the theorem is not true: consider for example the cyclic group C4 and its normal subgroup C2. Then if C4 were a semidirect product of C2 and C4 / C2 cong C_2 then C4 would have to contain two elements of order 2, but it only contains one. The Schur Zassenhaus theorem at least partially answers the question: "In a composition series, how can we classify groups with a certain set of composition factors?" The other part, which is where the composition factors do not have coprime orders, is tackled in extension theory.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131155284
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- EAN 9786131155284
- Format Fachbuch
- Titel Schur Zassenhaus Theorem
- Herausgeber Betascript Publishing
- Anzahl Seiten 76
- Genre Mathematik
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