Francis, Forrest
(Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer SciencesArts and ScienceDepartment of Mathematics and Computer Science, 2017)

In 1962, Rosser and Schoenfeld asked whether there were infinitely many natural numbers n for which n/φ(n) > e^C log(log(n)), where C is the Euler-Mascheroni constant and φ(n) is Euler's totient function. This question was ...