Siavashi, Sahar; University of Lethbridge. Faculty of Arts and Science
(Lethbridge, Alta : University of Lethbridge, Dept. of Mathematics and Computer ScienceArts and ScienceDepartment of Mathematics and Computer Science, 2017)
We study the solutions of certain congruences in different rings. The congruences include
a^p-1 ≡ 1 (mod p^2);
for integer a > 1 and prime p with p does not divide by a, and
a^φ(m) ≡ 1 (mod m^2),
for integer m with ...