Results 31 to 40 of about 1,107 (154)

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

open access: yesCancer 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   +26 more
wiley   +1 more source

Curvature Identities for Generalized Kenmotsu Manifolds [PDF]

open access: yesE3S 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   +2 more
doaj   +1 more source

The Sasaki-Kenmotsu manifolds

open access: yesActa et Commentationes Universitatis Tartuensis de Mathematica, 2022
In the present paper, we introduce a new class of structures on an even dimensional differentiable Riemannian manifold which combines, well known in literature, the Sasakian and Kenmotsu structures simultaneously. The structure will be called a Sasaki–Kenmotsu structure by us.
Beldjilali, Gherici, Gezer, Aydin
openaire   +1 more source

ρ‐Einstein Solitons on Warped Product Manifolds and Applications

open access: yesJournal 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   +5 more
wiley   +1 more source

On the geometry of generalized nonholonomic Kenmotsu manifolds

open access: yesДифференциальная геометрия многообразий фигур, 2022
The concept of a generalized nonholonomic Kenmotsu manifold is introduced. In contrast to the previously defined nonholonomic Kenmotsu manifold, the manifold studied in the article is an almost normal almost contact metric manifold of odd rank.
A.V. Bukusheva
doaj   +1 more source

The critical point equation on Kenmotsu and almost Kenmotsu manifolds [PDF]

open access: yesPublicationes Mathematicae Debrecen, 2020
arXiv admin note: text overlap with arXiv:1701 ...
Patra, Dhriti Sundar   +2 more
openaire   +2 more sources

Some New Results on Trans‐Sasakian Manifolds

open access: yesJournal 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

Estimation of sharp geometric inequality in \(D_{\alpha}\)-homothetically deformed Kenmotsu manifolds

open access: yesCubo, 2023
In this article, we investigate the Kenmotsu manifold when applied to a \(D_{\alpha}\)-homothetic deformation. Then, given a submanifold in a \(D_{\alpha}\)-homothetically deformed Kenmotsu manifold, we derive the generalized Wintgen inequality ...
Mohd Danish Siddiqi   +3 more
doaj   +1 more source

On kenmotsu manifold

open access: yesCommunications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 2005
Summary: The object of this paper is to study a type of Kenmotsu manifold called Kenmotsu \((GR)_n\)-manifold and Kenmotsu \(G(PRS)_n\) manifold \((n>2)\). The \(W_4\)-curvature tensor on Kenmotsu manifolds is also studied.
Prasad, B., Verma, R. K.
openaire   +3 more sources

ON PARA KENMOTSU MANIFOLD [PDF]

open access: yesInternational Journal of Pure and Apllied Mathematics, 2014
A type of para Kenmotsu (briefly p -Kenmotsu) manifold in which R( ,X).C = 0 has been considered, where C is the conformal curvature tensor of the manifold and R is the curvature transformation. It has been shown that such a manifold is conformally flat and hence is an sp -Kenmotsu manifold.
K.L. Sai Prasad, T. Satyanarayana
openaire   +1 more source

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