Holomorph of Z8: Difference between revisions
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The group is solvable. In fact, it is [[metabelian group|metabelian]], because the additive group is an Abelian [[normal subgroup]] (isomorphic to <math>\Z/8\Z</math>) and the quotient is Abelian, isomorphic to the [[Klein- | The group is solvable. In fact, it is [[metabelian group|metabelian]], because the additive group is an Abelian [[normal subgroup]] (isomorphic to <math>\Z/8\Z</math>) and the quotient is Abelian, isomorphic to the [[Klein four-group]]. | ||
The commutator subgroup of <math>G</math> is not the whole of the additive group, though. It is only the even integers in the additive group. | The commutator subgroup of <math>G</math> is not the whole of the additive group, though. It is only the even integers in the additive group. | ||
Revision as of 19:53, 27 March 2009
This article is about a particular group, i.e., a group unique upto isomorphism. View specific information (such as linear representation theory, subgroup structure) about this group
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This particular group is a finite group of order: 32
Definition
This group (which we shall call throughout) can be defined in either of these ways:
- It is the holomorph of the cyclic group on eight elements. In other words, it is the direct product of the cyclic group on eight elements, with its automorphism group.
- It is the holomorph of the ring .
Group properties
Solvability
This particular group is solvable
The group is solvable. In fact, it is metabelian, because the additive group is an Abelian normal subgroup (isomorphic to ) and the quotient is Abelian, isomorphic to the Klein four-group.
The commutator subgroup of is not the whole of the additive group, though. It is only the even integers in the additive group.