Left-transitively WNSCDIN not implies normal

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This article gives the statement and possibly, proof, of a non-implication relation between two subgroup properties. That is, it states that every subgroup satisfying the first subgroup property (i.e., left-transitively WNSCDIN-subgroup) need not satisfy the second subgroup property (i.e., normal subgroup)
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Statement

We can have a group and a left-transitively WNSCDIN-subgroup of that is not normal in .

Proof

Example of a subgroup of order two

Further information: dihedral group:D8

Let be any group with a non-normal subgroup of order two. Then, is left-transitively WNSCDIN in .

For a concrete example, take to be a dihedral group and to be a subgroup of order two generated by a reflection element.