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Math Help - commutator subgroups

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    commutator subgroups

    Prove A_n is the commutator subgroup of S_n for all n > 4.
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    Quote Originally Posted by dori1123 View Post
    Prove A_n is the commutator subgroup of S_n for all n > 4.
    The commutator subgroup of S_n must be normal. But for n > 4 the only non-trivial normal subgroup of S_n is A_n.
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