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visits member for 2 years, 3 months
seen Jun 3 '12 at 21:54

Jun
3
awarded  Editor
Jun
3
revised A characteristic subgroup is a normal subgroup
added 50 characters in body; edited title
Jun
3
awarded  Scholar
Jun
3
accepted A characteristic subgroup is a normal subgroup
Jun
3
awarded  Student
Jun
3
asked A characteristic subgroup is a normal subgroup