Yazar "Sari, Ramazan" için listeleme
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Generalized Kenmotsu Manifolds
Vanli, Aysel Turgut; Sari, Ramazan (RGN PUBL, 2016)In 1972, K. Kenmotsu studied a class of almost contact Riemannian manifolds which later are called a Kenmotsu manifold. In this paper, we study Kenmotsu manifolds with (2n + s)-dimensional s-contact metric manifold that ... -
Generic ??-Riemannian submersions
Sari, Ramazan (Hacettepe Univ, Fac Sci, 2022)As a generalization of semi-invariant xi(perpendicular to)-Riemannian submersions, we introduce the generic xi(perpendicular to)- Riemannian submersions. We focus on the generic xi(perpendicular to)-Riemannian submersions ... -
ON CR-SUBMANIFOLDS OF A S-MANIFOLD ENDOWED WITH A SEMI-SYMMETRIC NON-METRIC CONNECTION
Akyol, Mehmet Akif; Sari, Ramazan (ANKARA UNIV, FAC SCI, 2016)In this paper, we study CR-submanifolds of an S-manifold endowed with a semi-symmetric non-metric connection. We give an example, investigating integrabilities of horizontal and vertical distributions of CR-sub manifolds ... -
On Curvatures of Semi-invariant Submanifolds of Lorentzian Para-Sasakian Manifolds
Sari, Ramazan; Ünal, İnan (Association of Mathematicians (MATDER), 2023)A Lorentzian para-Sasakian (LP-Sasakian) space form is a kind of para-Sasakian manifold with constant φ− holomorphic sectional curvature. The presented paper is on the curvatures of semi-invariant submanifolds of an ... -
On Semi-Slant xi(perpendicular to)-Riemannian Submersions
Akyol, Mehmet Akif; Sari, Ramazan (SPRINGER BASEL AG, 2017)The aim of the present paper is to define and study semi-slant xi(perpendicular to)-Riemannian submersions from Sasakian manifolds onto Riemannian manifolds as a generalization of anti-invariant xi(perpendicular to)-Riemannian ... -
On special submanifolds of the Page space
Kalafat, Mustafa; Sari, Ramazan (Elsevier, 2021)In this paper, we study some classes of submanifolds of codimension one and two in the Page space. These submanifolds are totally geodesic. We also compute their curvature and show that some of them are constant curvature ... -
Semi-invariant xi(perpendicular to)-Riemannian submersions from almost contact metric manifolds
Akyol, Mehmet Akif; Sari, Ramazan; Aksoy, Elif (WORLD SCIENTIFIC PUBL CO PTE LTD, 2017)As a generalization of anti-invariant xi(perpendicular to)-Riemannian submersions, we introduce semiinvariant xi(perpendicular to)-Riemannian submersions from Sasakian manifolds onto Riemannian manifolds. We give examples, ... -
SEMI-SLANT LIGHTLIKE SUBMERSIONS
Sari, Ramazan (Ankara Univ, Fac Sci, 2024)In this paper, we intend to study semi-slant lightlike submersions from indefinite Kaehler manifolds onto lightlike manifolds. After giving definitions and basic properties, we obtain conditions for a lightlike submersion ... -
The Smallest Dimension Submanifolds of Para beta-Kenmotsu Manifold
Turgut Vanli, Aysel; Sari, Ramazan (GAZI UNIV, 2016)In this paper, we have studied the smallest dimensional submanifold of para beta-Kenmotsu manifold. Necessary and sufficient conditions are given on 3-dimensional submanifolds of a 5-dimensional para beta-Kenmotsu manifold ... -
Some Curvature Properties of CR-Submanifolds of an S-Manifold with a Quarter-Symmetric Non-Metric Connection
Sari, Ramazan; Akyol, Mehmet Akif; Aksoy, Elif (CENTRE ENVIRONMENT SOCIAL & ECONOMIC RESEARCH PUBL-CESER, 2017)The purpose of this paper is to study CR-submanifolds of an S-manifold endowed with a quarter symmetric non-metric connection. We investigate that some properties of CR-submanifolds of an S-space form a quarter symmetric ...
