Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Chérif, Ahmed"'
Autor:
Cherif, Ahmed Mohammed
In this paper, we give some properties of biharmonic hypersurface in Riemannian manifold has a torse-forming vector field.
Externí odkaz:
http://arxiv.org/abs/2305.02447
In this paper, we give a classification of Codazzi hypersurfaces in a Lie group $(Nil^{4},\widetilde g)$. We also give a characterization of a class of minimal hypersurfaces in $(Nil^{4},\widetilde g)$ with an example of a minimal surface in this cla
Externí odkaz:
http://arxiv.org/abs/2205.09848
Autor:
ELMAMY, Cherif Ahmed, ABDELLAHI, Bah Mohamed Lemine, ER-RAIOUI, Pr Hassan, DARTIGE, Aly, ZAMEL, Mohamed Lemine, BABOU, Dedah A.H.M.E.D., ElVally, Yeslem, DEIDA, Pr Mohamed Vadel
Publikováno v:
In Marine Pollution Bulletin February 2025 211
Publikováno v:
Communications in Mathematics, Volume 30 (2022), Issue 1 (May 12, 2022) cm:9311
In this note, we find a necessary condition on odd-dimensional Riemannian manifolds under which both of Sasakian structure and the generalised Ricci soliton equation are satisfied, and we give some examples.
Externí odkaz:
http://arxiv.org/abs/2204.00063
In this paper, we extend the definition of p-harmonic and p-biharmonic maps between Riemannian manifolds. We present some new properties for the generalized stable p-harmonic maps.
Externí odkaz:
http://arxiv.org/abs/2203.03011
In this paper, we present some new properties for p-biharmonic hypersurfaces in Riemannian manifold. We also characterize the p-biharmonic submanifolds in an Einstein space. We construct a new example of proper p-biharmonic hypersurfaces. We present
Externí odkaz:
http://arxiv.org/abs/2111.12003
Publikováno v:
Communications in Mathematics, Volume 31 (2023), Issue 1 (November 11, 2022) cm:10289
In this paper, we consider p-biharmonic submanifolds of aspace form. We give the necessary and sufficient conditions for a submanifold to be p-biharmonic in a space form. We present some new properties for the stress p-bienergy tensor.
Externí odkaz:
http://arxiv.org/abs/2104.12562
Autor:
Cherif, Ahmed Mohammed
This article describes a formula for second variation of generalized Einstein-Hilbert functional on Riemannian manifolds.
Externí odkaz:
http://arxiv.org/abs/2103.08309
Autor:
Cherif, Ahmed Mohammed
In this paper, we study the existence of harmonic and bi-harmonic maps into Riemannian manifolds admitting a conformal vector field, or a nontrivial Ricci solitons.
Externí odkaz:
http://arxiv.org/abs/2004.08224
Autor:
Elmamy, Cherif Ahmed Ahmed, Abdellahi, Bah Mohamed Lemine, Er-Raioui, Hassan, Dartige, Aly, Zamel, Mohamed Lemine, Deida, Pr Mohamed Vadel
Publikováno v:
In Marine Pollution Bulletin May 2021 166