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Homework Help: Proof with symbols

  1. Mar 31, 2008 #1
    1. The problem statement, all variables and given/known data
    Prove uppsidxe Ax, (x is an element Z^+ arrow backwords Ey, backwords Ez, ((y is an element of Q)^(Z is an element of Q)^(yz is not equal to 0)^(x^2=y^2+z^2)

    2. Relevant equations

    3. The attempt at a solution

    Could someone first help me put this into words?

    Is it something like this? For every x, where x is an element of the positive integers, then for every y and for every Z, y is an element of W or z is an element of W or yz is not=0 or x^2=y^2+z^2

    Could someone show me how to prove this, please?

    Thank you very much
  2. jcsd
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