RT journal article T1 The Stereographic Projection in Topological Modules A1 García Pacheco, Francisco Javier A2 Matemáticas K1 stereographic projection K1 strongly rotund point K1 topological module K1 topological ring AB The stereographic projection is constructed in topological modules. Let A be an additively symmetric closed subset of a topological R-module M such that (Formula presented.). If there exists a continuous functional (Formula presented.) in the dual module (Formula presented.), an invertible (Formula presented.) and an element a in the topological boundary (Formula presented.) of A in such a way that (Formula presented.), (Formula presented.), and (Formula presented.), then the following function (Formula presented.), from (Formula presented.) to (Formula presented.), is a well-defined stereographic projection (also continuous if multiplicative inversion is continuous on R). Finally, we provide sufficient conditions for the previous stereographic projection to become a homeomorphism PB MDPI SN 2075-1680 YR 2023 FD 2023-02-20 LK http://hdl.handle.net/10498/31449 UL http://hdl.handle.net/10498/31449 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 12-nov-2026