Results 21 to 30 of about 139,893 (132)

Curvature Identities for Generalized Kenmotsu Manifolds [PDF]

E3S Web of Conferences, 2021
In the present paper we obtained 2 identities, which are satisfied by Riemann curvature tensor of generalized Kenmotsu manifolds. There was obtained an analytic expression for third structure tensor or tensor of f-holomorphic sectional curvature of GK ...
Ahmad Abu-Saleem, Kochetkov Ivan, Rustanov Aligadzhi   +2 more
doaj   +1 more source

Predictive value of EGFR mutation in non–small‐cell lung cancer patients treated with platinum doublet postoperative chemotherapy

Cancer Science, Volume 113, Issue 1, Page 287-296, January 2022., 2022
Mutation status of stage II‐III Ns‐NSCLC (n = 389) was analyzed using targeted deep sequencing. Patients with an EGFR mutation‐positive status had a significantly shorter recurrence‐free survival (RFS). Both the pathological stage and EGFR mutation status were independent prognostic factors for RFS. Abstract The mutation status of tumor tissue DNA (n = 
Toshiaki Takahashi, Kazuko Sakai, Hirotsugu Kenmotsu, Kiyotaka Yoh, Haruko Daga, Tatsuo Ohira, Tsuyoshi Ueno, Tadashi Aoki, Hidetoshi Hayashi, Koji Yamazaki, Yukio Hosomi, Toyofumi F. Chen‐Yoshikawa, Norihito Okumura, Yuichi Takiguchi, Akimasa Sekine, Tomohiro Haruki, Hiromasa Yamamoto, Yuki Sato, Hiroaki Akamatsu, Takashi Seto, Sho Saeki, Kenji Sugio, Makoto Nishio, Hidetoshi Inokawa, Nobuyuki Yamamoto, Kazuto Nishio, Masahiro Tsuboi   +26 more
wiley   +1 more source

ρ‐Einstein Solitons on Warped Product Manifolds and Applications

Journal of Mathematics, Volume 2022, Issue 1, 2022., 2022
The purpose of this research is to investigate how a ρ‐Einstein soliton structure on a warped product manifold affects its base and fiber factor manifolds. Firstly, the pertinent properties of ρ‐Einstein solitons are provided. Secondly, numerous necessary and sufficient conditions of a ρ‐Einstein soliton warped product manifold to make its factor ρ ...
Nasser Bin Turki, Sameh Shenawy, H. K. EL-Sayied, N. Syied, C. A. Mantica, Antonio Masiello   +5 more
wiley   +1 more source

Geometry of conformal η-Ricci solitons and conformal η-Ricci almost solitons on paracontact geometry

Open Mathematics, 2022
We prove that if an η\eta -Einstein para-Kenmotsu manifold admits a conformal η\eta -Ricci soliton then it is Einstein. Next, we proved that a para-Kenmotsu metric as a conformal η\eta -Ricci soliton is Einstein if its potential vector field VV is ...
Li Yanlin, Dey Santu, Pahan Sampa, Ali Akram   +3 more
doaj   +1 more source

Some New Results on Trans‐Sasakian Manifolds

Journal of Mathematics, Volume 2022, Issue 1, 2022., 2022
In this paper, we classify trans‐Sasakian manifolds which are realized as real hypersurfaces in a complex space form. We also investigate trans‐Sasakian manifolds whose Reeb vector fields are harmonic‐Killing. The above results bring some new characterizations for the property of trans‐Sasakian 3‐manifolds.
Lei Wang, Yan Zhao, Antonio Masiello
wiley   +1 more source

On Hemi-Slant Submanifold of Kenmotsu Manifold [PDF]

, 2019
We present here a brief analysis on some properties of hemi-slant submanifold of Kenmotsu manifold. After the introduction some preliminaries about this manifold have been discussed.
Chhanda Patra, Barnali Laha, Arindam Bhattacharyya   +2 more
core   +1 more source

CHARACTERIZATIONS OF CONTACT PSEUDO-SLANT SUBMANIFOLDS OF A PARA-KENMOTSU MANIFOLD

Journal of Amasya University the Institute of Sciences and Technology, 2022
In this paper, the geometry of contact pseudo-slant submanifolds of a para Kenmotsu manifoldhowe been studied. The necessary and sufficient conditions for a submanifolds to be a contact pseudoslantsubmanifolds of a para Kenmotsu manifold are given.
Ümit Yıldırım, Süleyman Dirik
doaj   +1 more source

On a Semi-symmetric Metric Connection in an Almost Kenmotsu Manifold with Nullity Distributions [PDF]

, 2016
summary:We consider a semisymmetric metric connection in an almost Kenmotsu manifold with its characteristic vector field $\xi $ belonging to the $(k,\mu )^{\prime }$-nullity distribution and $(k,\mu )$-nullity distribution respectively.
De, Uday Chand, Ghosh, Gopal
core   +1 more source

On geometry of Kenmotsu manifolds with N-connection

Дифференциальная геометрия многообразий фигур, 2019
A Kenmotsu manifold with a given N-connection is considered. From the integrability of the distribution of a Kenmotsu manifold it follows that the N-connection belongs to the class of the quarter-symmetric connec­tions. Among the N-connections, the class
A. Bukusheva
doaj   +1 more source

LP-Kenmotsu Manifolds Admitting η-Ricci Solitons and Spacetime

Journal of Mathematics, 2022
In the present paper, LP-Kenmotsu manifolds admitting η-Ricci solitons have been studied. Moreover, some results for η-Ricci solitons in LP-Kenmotsu manifolds in the spacetime of general relativity have also been proved.
Yanlin Li, Abdul Haseeb, Musavvir Ali
doaj   +1 more source