Subgroup-cofactorial automorphism-invariant implies left-transitively 2-subnormal
This article gives the statement and possibly, proof, of an implication relation between two subgroup properties. That is, it states that every subgroup satisfying the first subgroup property (i.e., subgroup-cofactorial automorphism-invariant subgroup) must also satisfy the second subgroup property (i.e., left-transitively 2-subnormal subgroup)
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This article describes a computation relating the result of the Composition operator (?) on two known subgroup properties (i.e., Subgroup-cofactorial automorphism-invariant subgroup (?) and 2-subnormal subgroup (?)), to another known subgroup property (i.e., 2-subnormal subgroup (?))
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Suppose are groups such that is a subgroup-cofactorial automorphism-invariant subgroup of and is a 2-subnormal subgroup of . Then, is also a 2-subnormal subgroup of .