Is it legal to designate a specific X, Y and Z in the process of forming a counterexample? Or is it that for the set of X and Y with the stated relationships there is a Z, a, b and c which satisfies?
Happy 410$^{th}$ Birthday Fermat!
Is it legal to designate a specific X, Y and Z in the process of forming a counterexample? Or is it that for the set of X and Y with the stated relationships there is a Z, a, b and c which satisfies?
Happy 410$^{th}$ Birthday Fermat!