4 papers · 1 filter
Weak almost contact structure with B-metric
Cornelia-Livia Bejan, Şemsi Eken Meriç
Corresponding to weak almost contact metric structures (defined recently by Rovenski and Wolak), we introduce and study here weak almost contact structures with B-metric, which gen…
Almost paracontact metric 3-dimensional Walker manifolds
Galia Nakova, Cornelia-Livia Bejan
In this paper we construct and study almost paracontact metric structures on a 3-dimensional Walker manifold with respect to a local basis only by the coordinat…
Almost para-Hermitian and almost paracontact metric structures induced by natural Riemann extensions
Cornelia-Livia Bejan, Galia Nakova
In this paper we consider a manifold with a symmetric linear connection which induces on the cotangent bundle of a semi-Riemannian metric $\overl…
Ricci solitons in manifolds with quasi-constant curvature
Cornelia Livia Bejan, Mircea Crasmareanu
The Eisenhart problem of finding parallel tensors treated already in the framework of quasi-constant curvature manifolds in \cite{x:j} is reconsidered for the symmetric case and th…