Results 21 to 30 of about 382 (182)

On Quasi Hemi-Slant Submersions

open access: yesCommunications in Advanced Mathematical Sciences, 2023
The paper deals with the notion of quasi hemi-slant submersions from Lorentzian para Sasakian manifolds onto Riemannian manifolds. These submersions are generalization of hemi-slant submersions and semi-slant submersions. In this paper, we also study the
Sushil Kumar, Pramod Kumar Rawat
doaj   +1 more source

Riemannian Maps From Almost Hermitian Manifolds [PDF]

open access: yes, 2017
In this chapter, we study Riemannian maps from almost Hermitian manifolds to Riemannian manifolds. In section 1, we study holomorphic Riemannian maps as a generalization of holomorphic submersions and obtain a characterization of such maps. In section 2,
Sahin, Bayram, Bayram Şahin
core   +1 more source

The Mixed Scalar Curvature of a Twisted Product Riemannian Manifolds and Projective Submersions

open access: yesMathematics, 2019
In the present paper, we study twisted and warped products of Riemannian manifolds. As an application, we consider projective submersions of Riemannian manifolds, since any Riemannian manifold admitting a projective submersion is necessarily a twisted ...
Vladimir Rovenski   +2 more
doaj   +1 more source

Isotropic Riemannian submersions

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2020
Summary: In this paper, we present the notion of isotropic submersions between Riemannian manifolds. We first give examples to illustrate this new notion. Then we express a characterization in terms of O'Neill's tensor field T and examine certain relations between sectional curvatures of the total manifold and the base manifold. We also study \(\lambda\
Feyza Esra ERDOĞAN, Bayram ŞAHİN
openaire   +2 more sources

Optimal Inequalities for Hemi-Slant Riemannian Submersions

open access: yesMathematics, 2022
In the present paper, we establish some basic inequalities involving the Ricci and scalar curvature of the vertical and the horizontal distributions for hemi-slant submersions having the total space a complex space form. We also discuss the equality case
Mehmet Akif Akyol   +3 more
doaj   +1 more source

ON RIEMANNIAN SUBMERSIONS

open access: yesJP Journal of Geometry and Topology, 2019
Summary: Let \(M\) and \(N\) be compact oriented Riemannian manifolds. Let \(\varphi:(M,g)\to(N,h)\) be a horizontal conformal submersion with dilation \(\lambda\) and let \(\tau\) be the tension field of \(\Phi\). The aim of this paper is to prove the theorem stated in the Introduction.
openaire   +3 more sources

SHARP INEQUALITIES INVOLVING THE RICCI CURVATURE FOR RIEMANNIAN SUBMERSIONS [PDF]

open access: yes, 2017
In this paper, we obtain sharp inequalities on Riemannian manifolds admitting a Riemannian submersion and give some characterizations using these inequalities.
Gülbahar, Mehmet   +2 more
core   +3 more sources

Sufficient conditions for a bundle-like foliation to admit a Riemannian submersion onto its leaf space [PDF]

open access: yes, 1982
This note furnishes a necessary and sufficient condition for a bundlelike foliation to be defined globally by a Riemannian submersion.
Richard H. Escobales
core   +1 more source

Slant submersions from almost product Riemannian manifolds [PDF]

open access: yes, 2013
In this paper, we define the concept of almost product Riemannian submersion between almost product Riemannian manifolds. We introduce slant submersions from almost product Riemannian manifolds onto Riemannian manifolds.
Gunduzalp, Yilmaz
core   +1 more source

Simulation method of dam break flood propagation based on improved SPH model

open access: yesShui kexue jinzhan, 2023
The accuracy of dam break flood propagation simulations is pivotal for the effectiveness of reservoir flood predictions. This study introduces a numerical simulation method, specifically tailored for dam break flood propagation analysis, using the smooth
Tongchun LI   +5 more
doaj   +1 more source

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