Difference between revisions of "Characteristicity is transitive"

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==References==
 
==References==
 
===Textbook references===
 
===Textbook references===
* {{booklink|DummitFoote}}, Page 135, Page 137 (Problem 8(b))
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* {{booklink-stated|DummitFoote}}, Page 135, Page 137 (Problem 8(b))
* {{booklink|AlperinBell}}, Page 17, ''Lemma 4''
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* {{booklink-stated|AlperinBell}}, Page 17, ''Lemma 4''
* {{booklink|RobinsonGT}}, Page 28, ''Characteristic and Fully invariant subgroups'', 1.5.6(ii)
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* {{booklink-stated|RobinsonGT}}, Page 28, ''Characteristic and Fully invariant subgroups'', 1.5.6(ii)

Revision as of 23:18, 9 May 2008

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This article gives the statement, and possibly proof, of a subgroup property satisfying a subgroup metaproperty
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Statement

Property-theoretic statement

The subgroup property of being characteristic satisfies the subgroup metaproperty of being transitive.

Verbal statement

A characteristic subgroup of a characteristic subgroup is characteristic in the whole group.

Symbolic statement

Let H be a characteristic subgroup of K, and K a characteristic subgroup of G. Then, H is a characteristic subgroup of G.

Proof

PLACEHOLDER FOR INFORMATION TO BE FILLED IN: [SHOW MORE]

References

Textbook references

  • Abstract Algebra by David S. Dummit and Richard M. Foote, 10-digit ISBN 0471433349, 13-digit ISBN 978-0471433347, More info, Page 135, Page 137 (Problem 8(b))
  • Groups and representations by Jonathan Lazare Alperin and Rowen B. Bell, ISBN 0387945261, More info, Page 17, Lemma 4
  • A Course in the Theory of Groups by Derek J. S. Robinson, ISBN 0387944613, More info, Page 28, Characteristic and Fully invariant subgroups, 1.5.6(ii)