About quadratic residues in a class of rings

Fernanda D. de Melo Hernández, Cesar A. Hernández Melo, Horacio Tapia-Recillas

Let $R$ be a commutative ring with a collection of ideals $\{N_1,N_2,\dots ,N_{k-1}\}$ satisfying certain conditions, properties of the set of invertible quadratic residues of t…