3 papers
math.DG2009
Hypersurfaces of Lorentzian para-Sasakian manifolds
Selcen Yuksel Perktas, Erol Kilic, Sadik Keles
In this paper, we study the invariant and noninvariant hypersurfaces of (1,1,1) almost contact manifolds, Lorentzian almost paracontact manifolds and Lorentzian para-Sasakian manif…
math.DG2009
Indefinite almost paracontact metric manifolds
Mukut Mani Tripathi, Erol Kilic, Selcen Yuksel Perktas +1
In this paper we introduce the concept of -almost paracontact manifolds, and in particular, of -para Sasakian manifolds. Several examples are presente…
math.DG2008
Biharmonic curves on \textit{LP}-Sasakian manifolds
Sadık Keleş, Selcen Yüksel Perktaş, Erol Kılıç
In this paper we give necessary and sufficient conditions for spacelike and timelike curves in a conformally flat, quasi conformally flat and conformally symmetric 4-dimensional \t…