Recent content by boy_travels

Sorry. I found a way to generate trivial counterexamples. E.g. x = [16 13 9 4] y = [17 12 8 5] etc.

Let x and y be n-tuples of non-negative integers. Furthermore, sum x_i = sum y_i and, sum x_i^2 = sum y_i^2 Is it true that x must be a permutation of y? Cheers!