PROBLEM OF THE MONTH
November 2006
Let p1, p2, ... , pn be different primes. Prove that, for any integers a1, a2, ... , an not simultaneously equal to zero, the number
a1 p11/2+ a2 p21/2+ ... + an pn1/2
is nonzero.This month's prize will be awarded to the best explained, correct solution.
Closing date: December 1st at 12 pm.