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Thread: group permutations 8

  1. April 24th 2009, 07:59 AM #1
    mpryal
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    group permutations 8

    Find a normal subgroup in A4 of order 4.

    Please show steps. Thanks!
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  2. April 24th 2009, 08:15 AM #2
    ThePerfectHacker
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    Quote Originally Posted by mpryal View Post
    Find a normal subgroup in A4 of order 4.

    Please show steps. Thanks!
    V=\{ \text{id},(12)(34),(13)(24),(14)(23)\}

    Show that \sigma V = V\sigma for any \sigma \in A_4.
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