Each Positive Rational Number Has the Form phi(m(2))/phi(n(2))

Krachun, D; Sun, ZW

Krachun, D (corresponding author), Russian Acad Sci, St Petersburg Dept, Steklov Math Inst, Fontanka 27, St Petersburg 191023, Russia.

AMERICAN MATHEMATICAL MONTHLY, 2020; 127 (9): 847

Abstract

In this note, we show that each positive rational number can be written as phi(m(2))/phi(n(2)), where phi is Euler's totient function andmandnare posi......

Full Text Link