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Math Help - disjunction question

  1. #1
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    disjunction question

    I just want to know whether p v (q v r) the same as q v (p v r)
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  2. #2
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    They are always the same!
    Or & and are both commutative and associative.
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    Quote Originally Posted by Plato View Post
    They are always the same!
    Or & and are both commutative and associative.
    even though the format is:

    ~p v (q v r) and I changed it to

    q v (~p v r)
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  4. #4
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    Quote Originally Posted by TheRekz View Post
    even though the format is:
    ~p v (q v r) and I changed it to
    q v (~p v r)
    It is both commutative and associative.
    So, of course!
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  5. #5
    MHF Contributor red_dog's Avatar
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    p\lor (q\lor r)\leftrightarrow(p\lor q)\lor r\leftrightarrow (q\lor p)\lor r\leftrightarrow q\lor (p\lor r)
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