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Math Help - Question about sets

  1. #1
    ixi
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    Question about sets

    I'm confused about what x , {x}, and {{x}} means. Could someone clarify it for me please?


    I think that,

    x is a value
    {x} is a set of consisting of a single value, x
    and i have no idea what {{x}} means

    But I don't think this right because I'm doing problems and I'm interpreting it wrong
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  2. #2
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    Quote Originally Posted by ixi View Post
    I'm confused about what x , {x}, and {{x}} means. Could someone clarify it for me please?
    The symbol x is an individual in some language (read universe).
    The symbol \{x\} is a set that contains x.
    The symbol \{\{x\}\} is a set that contains the set \{x\}.
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  3. #3
    ixi
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    Quote Originally Posted by Plato View Post
    The symbol x is an individual in some language (read universe).
    The symbol \{x\} is a set that contains x.
    The symbol \{\{x\}\} is a set that contains the set \{x\}.
    thanks
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