TURKISH JOURNAL OF MATHEMATICS, cilt.50, sa.3, ss.390-406, 2026 (SCI-Expanded, Scopus, TRDizin)
In this paper, we introduce and investigate the concept of an (r, f)-inverse in the context of modules, drawing inspiration from the (b, c)-inverse, which is the analogous notion in ring theory. We demonstrate the uniqueness of (r, f)-inverses in modules whenever they exist. We provide some necessary and sufficient conditions for the existence of (r, f)-inverses in modules.