Atindogbe, Cyriaque; Mbiakop, Theophile Kemajou Normalized null hypersurfaces in Lorentzian manifolds admitting conformal vector fields. (English) Zbl 1473.53028 Differ. Geom. Dyn. Syst. 23, 1-17 (2021). MSC: 53B25 53B30 PDFBibTeX XMLCite \textit{C. Atindogbe} and \textit{T. K. Mbiakop}, Differ. Geom. Dyn. Syst. 23, 1--17 (2021; Zbl 1473.53028) Full Text: Link
Atindogbe, C.; Gutiérrez, M.; Hounnonkpe, R. Lorentzian manifolds with causal Killing vector field: causality and geodesic connectedness. (English) Zbl 1446.53053 Ann. Mat. Pura Appl. (4) 199, No. 5, 1895-1908 (2020). MSC: 53C50 53C40 PDFBibTeX XMLCite \textit{C. Atindogbe} et al., Ann. Mat. Pura Appl. (4) 199, No. 5, 1895--1908 (2020; Zbl 1446.53053) Full Text: DOI
Atindogbe, C.; Gutiérrez, M.; Hounnonkpe, R. Functions of time type, curvature and causality theory. (English) Zbl 1416.53048 Differ. Geom. Appl. 64, 114-124 (2019). MSC: 53C30 83C75 53C40 PDFBibTeX XMLCite \textit{C. Atindogbe} et al., Differ. Geom. Appl. 64, 114--124 (2019; Zbl 1416.53048) Full Text: DOI