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Subgroups of $(\mathbb Z_n,+)$

homework abstract-algebra group-theory finite-groups asked Jun 7 '14 at 12:54

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Inner automorphisms form a normal subgroup of $\operatorname{Aut}(G)$

abstract-algebra group-theory normal-subgroups asked Jun 7 '14 at 16:30

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Subgroup structure of dihedral groups

group-theory normal-subgroups dihedral-groups asked Jun 17 '14 at 14:55

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Looking for “high dark” fantasy setting

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Inner automorphisms form a normal subgroup of $\operatorname{Aut}(G)$

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