Results 1 to 10 of about 74 (31)

Geometric and Physical Properties of Curvature Tensors -A Review

open access: yesJournal of International Academy Of Physical Sciences, 2023
Bernard Riemann was the first to define curvature tensor. Most of the curvature tensors are defined with the help of Riemann curvaturetensor, Ricci tensor and metric tensor.It has been observed that different combinations of Ricci tensor and metric ...
G. Pokhariyal
semanticscholar   +1 more source

Biharmonic almost complex structures

open access: yesForum of Mathematics, Sigma, 2023
This project uses methods in geometric analysis to study almost complex manifolds. We introduce the notion of biharmonic almost complex structure on a compact almost Hermitian manifold and study its regularity and existence in dimension four.
Weiyong He
doaj   +1 more source

A study on magnetic curves in trans-Sasakian manifolds

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
In this paper, we focused on biharmonic, f-harmonic and f-biharmonic magnetic curves in trans-Sasakian manifolds. Moreover, we obtain necessary and su cient conditions for magnetic curves as well as Legendre magnetic curves to be biharmonic, f-harmonic ...
Bozdağ Şerife Nur
doaj   +1 more source

Lipschitz minimality of the multiplication maps of unit complex, quaternion and octonion numbers [PDF]

open access: yes, 2013
We prove that the multiplication maps S n S n ! S n (nD 1;3;7) for unit complex, quaternion and octonion numbers are, up to isometries of domain and range, the unique Lipschitz constant minimizers in their homotopy classes.
Haomin Wen
semanticscholar   +1 more source

Some recent progress of biharmonic submanifolds [PDF]

open access: yes, 2015
In this note, we give a brief survey on some recent developments of biharmonic submanifolds. After reviewing some recent progress on Chen’s biharmonic conjecture, the Generalized Chen’s conjecture on biharmonic submanifolds of non-positively curved ...
Ye-lin Ou
semanticscholar   +1 more source

The Adjunction Inequality for Weyl-Harmonic Maps

open access: yesComplex Manifolds, 2020
In this paper we study an analog of minimal surfaces called Weyl-minimal surfaces in conformal manifolds with a Weyl connection (M4, c, D). We show that there is an Eells-Salamon type correspondence between nonvertical 𝒥-holomorphic curves in the ...
Ream Robert
doaj   +1 more source

Unique continuation theorems for biharmonic maps

open access: yesBulletin of the London Mathematical Society, Volume 51, Issue 4, Page 603-621, August 2019., 2019
Abstract We prove several unique continuation results for biharmonic maps between Riemannian manifolds.
Volker Branding, Cezar Oniciuc
wiley   +1 more source

Smooth long‐time existence of Harmonic Ricci Flow on surfaces

open access: yesJournal of the London Mathematical Society, Volume 95, Issue 1, Page 277-304, February 2017., 2017
Abstract We prove that at a finite singular time for the Harmonic Ricci Flow on a surface of positive genus both the energy density of the map component and the curvature of the domain manifold have to blow up simultaneously. As an immediate consequence, we obtain smooth long‐time existence for the Harmonic Ricci Flow with large coupling constant.
Reto Buzano, Melanie Rupflin
wiley   +1 more source

F-biharmonic maps into general Riemannian manifolds

open access: yesOpen Mathematics, 2019
Let ψ:(M, g) → (N, h) be a map between Riemannian manifolds (M, g) and (N, h).
Mi Rong
doaj   +1 more source

Generic Riemannian maps

open access: yes, 2017
As a generalization of semi-invariant Riemannian maps from almost Hermitian manifols, we first introduce generic Riemannian maps from almost Hermitian manifolds to Riemannian manifolds, give examples, obtain decomposition theorems and investigate ...
B. Şahin
semanticscholar   +1 more source

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