Results 31 to 40 of about 880,230 (109)
Semi-invariant Riemannian submersions from nearly Kaehler manifolds [PDF]
International Journal of Geometric Methods in Modern Physics, 2020 We study semi-invariant Riemannian submersions from a nearly Kaehler manifold to a Riemannian manifold. It is well known that the vertical distribution of a Riemannian submersion is always integrable therefore, we derive condition for the integrability of horizontal distribution of a semi-invariant Riemannian submersion and also investigate the ...
Rupali Kaushal +3 more
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CR-hypersurfaces of the six-dimensional sphere
International Journal of Mathematics and Mathematical Sciences, 1994 We proved that there does not exist a proper CR-hypersurface of S6 with parallel second fundamental form. As a result of this we showed that S6 does not admit a proper CR-totally umbilical hypersurface.
M. A. Bashir
doaj +1 more source
Warped Product Pointwise Hemi-Slant Submanifolds of Nearly Kaehler Manifolds
, 2023 In this paper, we introduce the notion of pointwise hemi-slant submanifolds of nearly Kaehler manifolds. Further, we study their warped products and prove the necessary and sufficient condition that a pointwise hemi-slant submanifold to be a warped product manifold.
Lamia Saeed Alqahtani +2 more
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Anti-invariant Riemannian submersions from nearly Kaehler manifolds
Filomat, 2013 We extend the notion of anti-invariant and Langrangian Riemannian submersion to the case when the total manifold is nearly Kaehler. We obtain the integrability conditions for the horizontal distribution while it is noted that the vertical distribution is always integrable.
Shahid Ali, Tanveer Fatima
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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
wiley +1 more source
6-dimensional nearly Kaehler manifolds of cohomogeneity one
, 2009 We consider 6-dimensional strict nearly Kaehler manifolds acted on by a compact, cohomogeneity one automorphism group G. We classify the compact manifolds of this class up to G-diffeomorphisms. We also prove that the manifold has constant sectional curvature whenever the group G is simple.
Podesta', Fabio, Spiro, Andrea
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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
wiley +1 more source
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
core
Molecular Ecology, Volume 35, Issue 8, April 2026.ABSTRACT Exposure to environmental pollutants can disrupt the gut microbiota, but how pollutants impact natural, seasonal changes in wildlife gut microbiota remains unknown. We quantified how exposure to radionuclides affected temporal changes in the gut microbiota of bank voles (Clethrionomys glareolus) inhabiting the Chornobyl Exclusion Zone (CEZ ...
Andrii Vasylenko +5 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu +4 more
wiley +1 more source