| http://www.w3.org/ns/prov#value | - You removed the relevant context, so I will remove stillmore.In the reply you snipped, I showed: If x,y,z are integers such that y^(1/2) = (x^10 - z^5)^(1/5) then, letting w = x^10 - z^5, the equation reduces to y^5 = w^2which implies y is a perfect square and w is a perfect 5'thpower.Now you ask, what if we assume that y is not a perfect square?Then you get a contradiction, of course.
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