2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69228Necessary and sufficient conditions for some deformation algebras to provide formal Frobenius structures are given. Also, examples of formal Frobenius structures with fundamental tensor that is not of the deformation type and examples of symmetric non-metric connections are presented.15 pagesDifferential Geometry53D45; 53C05; 53B15text