Tags » Frattini Subgroup

Compute the Frattini subgroup of a given group, and count its maximal subgroups

Prove that if is a prime and , then and . Deduce that has maximal subgroups.

Write . The maximal subgroups of have order . Note that and are thus maximal, so that . 34 more words

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Burnside's Basis Theorem and some basic consequences

Let be a prime and let be a finite -group.

  1. Prove that is an elementary abelian -group.
  2. Prove that if is a normal subgroup such that is elementary abelian then .
  3. 980 more words
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The Frattini subgroup of a finite group is nilpotent

Let be a finite group. Prove that is nilpotent.

We will use Frattini’s Argument to show that every Sylow subgroup is normal.

Let be a Sylow subgroup. 36 more words

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The Frattini subgroup is the set of all nongenerators

An element of a group is called a nongenerator if for all proper subgroups , is also proper. Prove that is the set of all nongenerators in . 107 more words

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The Frattini subgroup is inclusion-monotone on normal subgroups

When is a finite group prove that if is normal, then . Give an explicit example when this containment does not hold if is not normal in . 217 more words

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Computation of some Frattini subgroups

Compute , , , , and .

We begin with some lemmas.

Lemma 1: If is a subgroup of order 12, then . Proof: By Cauchy, contains an element of order 2 and an element of order 3. 215 more words

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The Frattini subgroup is characteristic

Let be a group and denote by the Frattini subgroup of . Prove that is characteristic.

We begin with some lemmas. Let denote the set of subgroups of ; recall that acts on by application: . 97 more words

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