- Apr 15, 2012--- In primenumbers@yahoogroups.com, Kermit Rose <kermit@...> wrote:
>

--every positive integer is a sum of 4 squares (Fermat, Euler, Lagrange);

> Hello Friends.

>

> Prove that every positive composite integer can be expressed as a sum of

> 4 positive integers

> such that the product of the 4 positive integers is a square integer.

>

> Kermit

the product of 4 squares is a square.

QED.

Note the word "composite" was not required. - << Previous post in topic Next post in topic >>