Results 11 to 20 of about 38 (38)

B.‐Y. Chen inequalities for semislant submanifolds in Sasakian space forms

International Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 27, Page 1731-1738, 2003., 2003
Chen (1993) established a sharp inequality for the sectional curvature of a submanifold in Riemannian space forms in terms of the scalar curvature and squared mean curvature. The notion of a semislant submanifold of a Sasakian manifold was introduced by J. L. Cabrerizo, A. Carriazo, L. M. Fernandez, and M. Fernandez (1999).
Dragoş Cioroboiu
wiley   +1 more source

A basic inequality for submanifolds in a cosymplectic space form

International Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 9, Page 539-547, 2003., 2003
For submanifolds tangent to the structure vector field in cosymplectic space forms, we establish a basic inequality between the main intrinsic invariants of the submanifold, namely, its sectional curvature and scalar curvature on one side; and its main extrinsic invariant, namely, squared mean curvature on the other side.
Jeong-Sik Kim, Jaedong Choi
wiley   +1 more source

*-Ricci soliton on (κ, μ)′-almost Kenmotsu manifolds

Open Mathematics, 2019
Let (M, g) be a non-Kenmotsu (κ, μ)′-almost Kenmotsu manifold of dimension 2n + 1. In this paper, we prove that if the metric g of M is a *-Ricci soliton, then either M is locally isometric to the product ℍn+1(−4)×ℝn or the potential vector field is ...
Dai Xinxin, Zhao Yan, Chand De Uday
doaj   +1 more source

Commuting Conditions of the k-th Cho operator with the structure Jacobi operator of real hypersurfaces in complex space forms

Open Mathematics, 2015
In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina, Pérez Juan de Dios   +1 more
doaj   +1 more source

Integrability of Reeb Distribution Associated to a Generalized Engel Manifold

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we define a generalized Reeb distribution of an Engel 4n‐manifold and give a necessary and sufficient condition for integrability of this Reeb distribution which gives a generalization of some results of N. Pia about Reeb distributions of Engel 4‐manifolds.
Serigne Abdoul Aziz Dramé, Cheikh Khoule, Hamidou Dathe, Murat Altunbaş   +3 more
wiley   +1 more source

Riemannian invariants for warped product submanifolds in Qεm×R{{\mathbb{Q}}}_{\varepsilon }^{m}\times {\mathbb{R}} and their applications

Open Mathematics
This article investigates the geometric and topologic of warped product submanifolds in Riemannian warped product Qεm×R{{\mathbb{Q}}}_{\varepsilon }^{m}\times {\mathbb{R}}.
Li Yanlin, Alshehri Norah, Ali Akram
doaj   +1 more source

Targetable vulnerabilities in T- and NK-cell lymphomas identified through preclinical models. [PDF]

Nat Commun, 2018
Ng SY, Yoshida N, Christie AL, Ghandi M, Dharia NV, Dempster J, Murakami M, Shigemori K, Morrow SN, Van Scoyk A, Cordero NA, Stevenson KE, Puligandla M, Haas B, Lo C, Meyers R, Gao G, Cherniack A, Louissaint A, Nardi V, Thorner AR, Long H, Qiu X, Morgan EA, Dorfman DM, Fiore D, Jang J, Epstein AL, Dogan A, Zhang Y, Horwitz SM, Jacobsen ED, Santiago S, Ren JG, Guerlavais V, Annis DA, Aivado M, Saleh MN, Mehta A, Tsherniak A, Root D, Vazquez F, Hahn WC, Inghirami G, Aster JC, Weinstock DM, Koch R.   +46 more
europepmc   +1 more source

Recurrent genomic gains in preinvasive lesions as a biomarker of risk for lung cancer. [PDF]

PLoS One, 2009
Massion PP, Zou Y, Uner H, Kiatsimkul P, Wolf HJ, Baron AE, Byers T, Jonsson S, Lam S, Hirsch FR, Miller YE, Franklin WA, Varella-Garcia M.   +12 more
europepmc   +1 more source

On almost cosymplectic (−1, μ, 0)-spaces

Open Mathematics, 2005
Dacko Piotr, Olszak Zbigniew
doaj   +1 more source

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Riemann soliton within the framework of contact geometry

Quaestiones Mathematicae, 2021
Venkatesha Venkatesha, Aruna Kumara H
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