We introduce geometric structures (connections, pseudo-Riemannian metrics) adapted to
some fundamental problems of Differential Geometry, and find geometrical characteristics …

In the present paper, some multitime Rayleigh evolution PDEs are built, as extensions of the
single-time corresponding PDEs, using elements of differential geometry. Introducing some …

ON NEW CLASSES OF EXPLICIT QUASI-EINSTEIN RIEMANNIAN MANIFOLDS 1. Introduction
The notion of quasi-Einstein manifold was recentl Page 1 International Journal of Geometric …

By using the additive and multiplicative separation of variables we find some classes of
solutions of the Laplace equation for a generalization of the Poincaré upper half plane …

In this article, we aim to introduce new classes of two-dimensional quasi-Einstein pseudo-
Riemannian manifolds with constant curvature. We also give a classification of 2 D quasi …

On a pseudo-Riemannian manifold (M, g) we consider∇ the Levi-Cività connection
associated to metric g and a function f: M→ ℝ whose pseudo-Riemannian Hessian is non …