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Math Help - partition help

  1. #1
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    partition help

    if set A = {3,4,5}
    P(A) = {{},{3},{4},{5},{3,4},{3,5},{4,5},{3,4,5}}

    A partition of A with 3 elements is
    is A1 = {3,4,5} when A2 is an empty set

    am I on the right track?
    Thanks for any Input.
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  2. #2
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    Quote Originally Posted by dunsta View Post
    if set A = {3,4,5}
    P(A) = {{},{3},{4},{5},{3,4},{3,5},{4,5},{3,4,5}}
    A partition of A with 3 elements is is A1 = {3,4,5} when A2 is an empty set
    In partition, no cell can be empty. So no that is not a partition.
    However, A_1=\{3,4,5\} is a trivial one cell partition.
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