Results 31 to 40 of about 140,369 (157)
Warped product semi-slant submanifolds in locally conformal Kaehler manifolds II
Pracì Mìžnarodnogo Geometričnogo Centru, 2018 In 1994 N.~Papaghiuc introduced the notion of semi-slant submanifold in a Hermitian manifold which is a generalization of $CR$- and slant-submanifolds, \cite{MR0353212}, \cite{MR760392}.
Koji Matsumoto
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Проблемы анализа, 2018 Recently, this author studied lightlike hypersurfaces of an indefinite Kaehler manifold endowed with a semi-symmetric non-metric connection in [7]. Further we study this subject.
Dae Ho Jin
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Totally umbilical CR-submanifolds of Semi-Riemannian Kaehler manifolds
International Journal of Mathematics and Mathematical Sciences, 1987 We study totally umbilical CR-submanifolds of a Kaehler manifold carrying a semi-Riemannian metric. It is shown that for dimension of the totally real distribution greater than one, these submanifolds are locally decomposable into a complex and a totally
K. L. Duggal, R. Sharma
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Generic warped product sub manifolds in a Kaehler manifold
Filomat, 2008 Let \(\bar M\) be an almost Hermitian manifold with an almost complex structure \(J\), Hermitian metric \(g\) and let \(M\) be a submanifold of \(\bar M\). For each \(x\in M\), let \(D_x=T_xM\cap JT_xM\). If the dimension of \(D_x\) remains the same for each \(x\in M\) and it defines a holomorphic distribution \(D\) on \(M\), then \(M\) is called a ...
Khan, K. A., Shahid, Ali, Nargis, Jamal
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Compact Totally Real Minimal Submanifolds in a Bochner-Kaehler Manifold
Universal Journal of Mathematics and Applications, 2018 In this paper, we establish the following results: Let $M$ be an $% m-$dimensional compact totally real minimal submanifold immersed in a locally symmetric Bochner-Kaehler manifold $\tilde{M}$ with Ricci curvature bounded from below. Then either $M$ is a
Mehmet Bektaş +2 more
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) are prominent wave‐like structures in the ionosphere, with complex generation mechanisms involving both atmospheric gravity waves (GWs) and electrodynamic instabilities such as the Perkins instability (PI).
Jing Liu +4 more
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Historical and Future Global Irrigation Energy Consumption by Fuel and Region
Earth's Future, Volume 14, Issue 5, May 2026.Abstract Irrigation energy use is a significant component of agricultural production costs, contributing directly to the energy and emissions intensity of crop production and ultimately to food prices. Understanding the existing structure of irrigation energy consumption help achieve food‐energy‐water security and environmental goals.
Ying Zhang +2 more
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Kaehler and para-Kaehler curvature Weyl manifolds
, 2010 We show that the Weyl structure of an almost-Hermitian Weyl manifold of dimension at least 6 is trivial if the associated curvature operator satisfies the Kaehler identity. Similarly if the curvature of an almost para-Hermitian Weyl manifold of dimension at least 6 satisfies the para-Kaehler identity, then the Weyl structure is trivial as well.
Gilkey, Peter, Nikcevic, Stana
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Signature of quaternionic Kaehler manifolds
Proceedings of the Japan Academy, Series A, Mathematical Sciences, 1983 Quaternionic Kähler manifolds have analogues of the Hard-Lefschetz theorem and the Hodge index theorem. The latter on the signature is simpler and clear cut. Let M be a compact connected quaternionic Kähler manifold of positive scalar curvature with dimension 4n. Theorem 1. \[ H^{2p}(M)=\sum_{2k\leq p}(L_{\Omega})^ k P^{2p-4k}(M),\quad p\leq n, \] and \
Nagano, Tadashi, Takeuchi, Masaru
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Totally real submanifolds of the nearly kaehler 6-sphere [PDF]
, 1997 Totally real 3-dimensiunal submanifolds of the nearly Kaehler 6-sphere are the main topic of this thesis. Having introduced preliminaries on the theory of complex and almost complex manifolds, the nearly Kaehler structure of S(^6) and the non existence ...
Travlopanos, Fotios
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