... It was apparently harder than I thought. I didn t have a proof but guessed it would be relatively easy when there is a known parametrization of allMessage 1 of 7 , Sep 1, 2011View SourceDavid wrote:
> SeeIt was apparently harder than I thought.
> which claims a proof by infinite descent that
> x^2+y^2 and x^2-y^2 cannot both be odd squares.
> David (who miserably failed to find a simpler proof)
I didn't have a proof but guessed it would be relatively easy when
there is a known parametrization of all Pythagorean triples.
I only did a brute force search to see there were no small solutions.
Jens Kruse Andersen