Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Uday De"'
Publikováno v:
AUT Journal of Mathematics and Computing, Vol 2, Iss 1, Pp 61-71 (2021)
The target of this paper is to study $N(k)$-contact metric manifolds with some types of conformal vector fields like $\phi$-holomorphic planar conformal vector fields and Ricci biconformal vector fields. We also characterize $N(k)$-contact metric man
Externí odkaz:
https://doaj.org/article/879d55a6279c43028e2959a3b311e162
Autor:
Mohammad Khan, Uday De
Publikováno v:
Filomat. 36:6369-6373
The purpose of the present work is to study the behavior of the cross-section of the metallic structure in M to the tangent bundle TM.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0102537cb4dbb0f96cdbc61ccfa2e04
https://doi.org/10.2298/fil2218369k
https://doi.org/10.2298/fil2218369k
Publikováno v:
Filomat. 36:1403-1413
The aim of the present paper is to characterize almost co-K?hler manifolds whose metrics are the Riemann solitons. At first we provide a necessary and sufficient condition for the metric of a 3-dimensional manifold to be Riemann soliton. Next it is p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae0b9ea6c8bf427efcfbe23a3aecf6ef
https://doi.org/10.2298/fil2204403b
https://doi.org/10.2298/fil2204403b
Publikováno v:
Filomat. 36:829-842
The main object of this paper is to characterize the perfect fluid spacetimes if its metrics are Ricci solitons, gradient Ricci solitons, gradient A-Einstein solitons and gradient Schouten solitons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d1ab94f5c6163122b6b70a1558872ec
https://doi.org/10.2298/fil2203829d
https://doi.org/10.2298/fil2203829d
Publikováno v:
Filomat. 36:2391-2401
In this paper we characterize weakly Ricci-symmetric spacetimes (WRS)n endowed with the Gray?s Decomposition. We provide, several interesting results of (WRS)n in Gray?s Decomposition. In addition we discuss some results based on weakly Ricci-symmetr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00708251366d6e689d6728b4790ef89a
https://doi.org/10.2298/fil2207391c
https://doi.org/10.2298/fil2207391c
Publikováno v:
Filomat. 36:6573-6584
The aim of the present article is to analyze three-dimensional quasi-Sasakian manifolds admitting Riemann solitons and Ricci Bourguignon solitons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331beb70e46a5b5ce22336153c991097
https://doi.org/10.2298/fil2219573s
https://doi.org/10.2298/fil2219573s
Publikováno v:
Filomat. 35:2801-2809
(m,?)-quasi-Einstein N(k)-contact metric manifolds have been studied and it is established that if such a manifold is a (m,?)-quasi-Einstein manifold, then the manifold is a manifold of constant sectional curvature k. Further analysis has been done f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eff25299f4e1289122b19eb9c065fe05
https://doi.org/10.2298/fil2108801s
https://doi.org/10.2298/fil2108801s
Publikováno v:
Filomat. 34:3287-3297
In this paper, we introduce a new type of curvature tensor named H-curvature tensor of type (1, 3) which is a linear combination of conformal and projective curvature tensors. First we deduce some basic geometric properties of H-curvature tensor. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78fb14b4b763cb54a8487158337ffcfb
https://doi.org/10.2298/fil2010287d
https://doi.org/10.2298/fil2010287d
Autor:
Young Suh Jin, Uday De Chand
Publikováno v:
Filomat. 33:4251-4260
In the present paper we characterize a type of spacetimes, called almost pseudo Z-symmetric spacetimes A(PZS)4. At first, we obtain a condition for an A(PZS)4 spacetime to be a perfect fluid spacetime and Roberson-Walker spacetime. It is shown that a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::274e5c03ceca5077a3fb4f3dd97838fe
https://doi.org/10.2298/fil1913251s
https://doi.org/10.2298/fil1913251s
Publikováno v:
Publications de l'Institut Math?matique (Belgrade). 104:169-181
We study certain curvature properties of Kenmotsu manifolds with respect to the quarter-symmetric metric connection. First we consider Ricci semisymmetric Kenmotsu manifolds with respect to a quarter-symmetric metric connection. Next, we study ξ-con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22847739a269d7323a4e86b4591a474b
https://doi.org/10.2298/pim1818169z
https://doi.org/10.2298/pim1818169z