Show that a nonempty subset H of a group G is a subgroup of G if and only if a(b inverse) in H for all a,b, in H.

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- Feb 10th 2008, 04:26 PMfulltwist8Abstract: Subgroups
Show that a nonempty subset H of a group G is a subgroup of G if and only if a(b inverse) in H for all a,b, in H.

- Feb 10th 2008, 04:28 PMThePerfectHacker