[Erken]

ขอโทษครับ
Corollary 1.23. Let m be a positive integer, and let a and b be integers relatively
prime to m. If x and y are integers such that
$a^x ≡ b^x (mod m)$ and $a^y ≡ b^y (mod m)$,
then
$a^{gcd(x,y)} ≡ b^{gcd(x,y)} (mod m)$