Results 21 to 30 of about 82,161 (203)

Types of Submanifolds in Metallic Riemannian Manifolds: A Short Survey

open access: yesMathematics, 2021
We provide a brief survey on the properties of submanifolds in metallic Riemannian manifolds. We focus on slant, semi-slant and hemi-slant submanifolds in metallic Riemannian manifolds and, in particular, on invariant, anti-invariant and semi-invariant ...
Cristina E. Hretcanu, Adara M. Blaga
doaj   +1 more source

Index theorems on manifolds with straight ends [PDF]

open access: yes, 2012
We study Fredholm properties and index formulas for Dirac operators over complete Riemannian manifolds with straight ends. An important class of examples of such manifolds are complete Riemannian manifolds with pinched negative sectional curvature and ...
Ballmann, W., Brüning, J., Carron, G.
core   +2 more sources

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

On h-Quasi-Hemi-Slant Riemannian Maps

open access: yesAxioms, 2022
In the present article, we indroduce and study h-quasi-hemi-slant (in short, h-qhs) Riemannian maps and almost h-qhs Riemannian maps from almost quaternionic Hermitian manifolds to Riemannian manifolds. We investigate some fundamental results mainly on h-
Mohd Bilal   +4 more
doaj   +1 more source

Remarks on metallic warped product manifolds [PDF]

open access: yes, 2018
We characterize the metallic structure on the product of two metallic manifolds in terms of metallic maps and provide a necessary and sufficient condition for the warped product of two locally metallic Riemannian manifolds to be locally metallic.
Blaga, Adara M., Hretcanu, Cristina E.
core   +2 more sources

Critical point equation on almost f-cosymplectic manifolds [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – Besse first conjectured that the solution of the critical point equation (CPE) must be Einstein. The CPE conjecture on some other types of Riemannian manifolds, for instance, odd-dimensional Riemannian manifolds has considered by many geometers.
H. Aruna Kumara   +2 more
doaj   +1 more source

On Polyharmonic Riemannian Manifolds

open access: yesZeitschrift für Analysis und ihre Anwendungen, 1987
A natural generalization of the harmonic manifolds is considered: a Riemannian manifold is called k -harmonic or polyharmonic if it admits a non-constant k -harmonic
Schimming, R., Kowolik, J.
openaire   +3 more sources

Conformal Quasi-Hemi-Slant Riemannian Maps

open access: yesCommunications in Advanced Mathematical Sciences, 2022
In this paper, we state some geometric properties of conformal quasi-hemi-slant Riemannian maps from almost Hermitian manifolds to Riemannian manifolds.
Şener Yanan
doaj   +1 more source

Slant and Semi-Slant Submanifolds in Metallic Riemannian Manifolds

open access: yesJournal of Function Spaces, 2018
The aim of our paper is to focus on some properties of slant and semi-slant submanifolds of metallic Riemannian manifolds. We give some characterizations for submanifolds to be slant or semi-slant submanifolds in metallic or Golden Riemannian manifolds ...
Cristina E. Hretcanu, Adara M. Blaga
doaj   +1 more source

A Note on the Geometry of Certain Classes of Lichnerowicz Laplacians and Their Applications

open access: yesMathematics, 2023
In the present paper, we prove vanishing theorems for the null space of the Lichnerowicz Laplacian acting on symmetric two tensors on complete and closed Riemannian manifolds and further estimate its lowest eigenvalue on closed Riemannian manifolds.
Vladimir Rovenski   +2 more
doaj   +1 more source

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