ATINDOGBE COMLAN CYRIAQUE [1], BERARD BERGERY Lionel [2],
Degenerate submanifolds of pseudo-Riemannian manifolds are quite difficult to study because there is no preferred connection when the sub- manifold [...]
Article, Ajoutée le 22/02/2018 13:21
ATINDOGBE COMLAN CYRIAQUE [1], BERARD BERGERY Lionel [2], TOSSA JOEL [3],
This paper introduces Gray-tensors on lightlike hypersurfaces M n+1 of signature (0, n), (n ≥ 1) and investigates on their basic properties in connec [...]
Article, Ajoutée le 22/02/2018 13:30
ATINDOGBE COMLAN CYRIAQUE [1], BERARD BERGERY Lionel [0], OGOUYANDJOU KOLADÉ SIMPLICE EPHREM CARLOS [3],
We study Weyl structures on lightlike hypersurfaces endowed with a conformal structure of certain type and specific screen distribution: the Weyl scr [...]
Article, Ajoutée le 22/02/2018 14:03
ATINDOGBE COMLAN CYRIAQUE [0], BERARD BERGERY Lionel [2],
We show that on a non-minimal lightlike hypersurface with nullity degree 1 , there exists a unique null transversal (normalizing) vector eld with p [...]
Article, Ajoutée le 22/02/2018 14:07