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Math Help - Sigma-algebra exercise.

  1. #1
    Junior Member
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    Exclamation Sigma-algebra exercise.

    Hello.

    We have the following sample space: \Omega = \left\{{1,2,3}\right\}

    Is this event of \Omega a sigma-algebra?

    A = \left\{{\left\{{\emptyset}\right\},\left\{{1,2,3}\  right\},\left\{{1}\right\},\left\{{2}\right\},\lef  t\{{1,3}\right\},\left\{{2,3}\right\}}\right\}

    I think the union propertie is not satisfied. Right?
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  2. #2
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    Edit your post change the math tags ... to [tex]...[/tex]
    It will be easy to help you then.
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