Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Shenawy, Sameh"'
Autor:
Chen, Bang-Yen1 (AUTHOR) chenb@msu.edu, Shenawy, Sameh2 (AUTHOR) drssshenawy@eng.modern-academy.edu.eg, De, Uday Chand3 (AUTHOR) ucdpm@caluniv.ac.in, Rabie, Alaa4 (AUTHOR) ara15@fayoum.edu.eg, Bin Turki, Nasser5 (AUTHOR) nassert@ksu.edu.sa
Publikováno v:
Axioms (2075-1680). Aug2024, Vol. 13 Issue 8, p500. 20p.
Publikováno v:
Astronomische Nachrichten, 2021; 1-4
When minimal length uncertainty emerging from generalized uncertainty principle (GUP) is thoughtfully implemented, it is of great interest to consider its impacts on {\it "gravitational} Einstein field equations (gEFE) and to try to find out whether
Externí odkaz:
http://arxiv.org/abs/2011.05328
Publikováno v:
Bulletin of the Malaysian Mathematical Sciences Society, Volume 43, pages 3395:3409 (2020)
This study aims mainly at investigating the effects of concircular flatness and concircular symmetry of a warped product manifold on its fibre and base manifolds. Concircularly flat and concircularly symmetric warped product manifolds are investigate
Externí odkaz:
http://arxiv.org/abs/1912.00483
Publikováno v:
KYUNGPOOK Math. J. 60(2020), 185-195
This paper aims to study the $W$-curvature tensor on relativistic space-times. The energy-momentum tensor T of a space-time is semi-symmetric given that the $W$-curvature tensor is semi-symmetric whereas energy-momentum tensor T of a space-time havin
Externí odkaz:
http://arxiv.org/abs/1912.00480
Publikováno v:
Filomat, Volume 34, Issue 11, 3767:3776 (2020)
A. Gray presented an interesting $O\left( n\right) $ invariant decomposition of the covariant derivative of the Ricci tensor. Manifolds whose Ricci tensor satisfies the defining property of each orthogonal class are called Einstein-like manifolds. In
Externí odkaz:
http://arxiv.org/abs/1905.05866
Autor:
De, Uday Chand, Shenawy, Sameh
Publikováno v:
International Journal of Geometric Methods in Modern Physics, Vol. 16, No. 08, 1950124 (2019)
Recently, it is proven that generalized Robertson-Walker space-times in all orthogonal subspaces of Gray's decomposition but one(unrestricted) are perfect fluid space-times. GRW space-times in the unrestricted subspace are identified by having consta
Externí odkaz:
http://arxiv.org/abs/1904.12120
Publikováno v:
In Reports on Mathematical Physics June 2023 91(3):409-422
Publikováno v:
In Reports on Mathematical Physics February 2023 91(1):103-116
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Journal of Mathematical Physics 60, 052506 (2019)
We give new necessary and sufficient conditions on the Weyl tensor for generalized Robertson-Walker (GRW) space-times to be perfect-fluid space-times. For GRW space-times, we determine the form of the Ricci tensor in all the O(n)-invariant subspaces
Externí odkaz:
http://arxiv.org/abs/1901.04070