2 papers
math.QA2002
Classification of differentials and Cartan calculus on bicrossproducts
F. Ngakeu, S. Majid, J-P. Ezin
We provide the Cartan calculus for bicovariant differential forms on bicrossproduct quantum groups $k(M)\lrbicross kG$ associated to finite group factorizations and a field…
math-ph2000
Reduction of the co-dimension of light-like isotropic sub-manifolds
Cyriaque Atindogbe, Jean-Pierre Ezin, Joël Tossa
We give a sufficient condition for a lightlike isotropic submanifold , of dimension , which is not totally geodesic in a semi-Riemannian manifold of constant curvature an…