Results 71 to 80 of about 355 (178)

On sectional and bisectional curvature of the H-umbilical submanifolds

International Journal of Mathematics and Mathematical Sciences, 2002
Let M be an H-umbilical submanifold of an almost Hermitian manifold M˜. Some relations expressing the difference of bisectional and of sectional curvatures of M˜ and of M are obtained.
S. Ianus, G. B. Rizza
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On six-dimensional Vaisman — Gray submanifolds of the octave algebra

Дифференциальная геометрия многообразий фигур, 2019
The W1 + W4 class of almost Hermitian manifolds (in accordance with the Gray — Hervella classification) is usually named as the class of Vaisman — Gray manifolds.
M. Banaru
doaj   +1 more source

Conformal Riemannian maps from almost Hermitian manifolds

TURKISH JOURNAL OF MATHEMATICS, 2018
Summary: Conformal Riemannian maps from almost Hermitian manifolds to Riemannian manifolds, namely conformal invariant Riemannian maps, holomorphic conformal Riemannian maps, and conformal antiinvariant Riemannian maps, are introduced. We mainly focus on conformal antiinvariant Riemannian maps from Kaehlerian manifolds.
Bayram ŞAHİN, Şener YANAN
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Efficient Robust Spontaneous Parametric Down‐Conversion via Detuning Modulated Composite Segments Designs

Laser &Photonics Reviews, Volume 20, Issue 5, 6 March 2026.
Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew, Yuval Reches, Ofir Yesharim, Moshe Goldstein, Ady Arie, Haim Suchowski   +5 more
wiley   +1 more source

On the Geometry of the Kähler Golden Manifold

Axioms
The main objective of this paper is to investigate the properties related to the sectional curvatures of a Kähler golden manifold, an almost Hermitian golden manifold whose almost complex golden structure is parallel with respect to the Levi–Civita ...
Cristina Elena Hreţcanu, Valeria Şutu (Cîrlan)   +1 more
doaj   +1 more source

Schur's Theorem for Almost Hermitian Manifolds

, 2011
MR 2002c:53043; 4 ...
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Complex Laplacians on almost-Hermitian manifolds [PDF]

Journal of Differential Geometry, 1971
Hsiung, Chuan Chih, Levko, III, John J.
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Hermitian pluriharmonic maps between almost Hermitian manifolds

Journal of Geometry and Physics
In the case where both the domain and target manifolds are almost Hermitian, we introduce the concept of Hermitian pluriharmonic maps. We prove that any holomorphic or anti-holomorphic map between almost Hermitian manifolds is Hermitian pluriharmonic. We also establish some monotonicity formulae for the partial energies of Hermitian pluriharmonic maps ...
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Almost Hermitian symmetric manifolds II differential invariants

Duke Mathematical Journal, 1991
The author continues the study initiated in part I [ibid. 81-112 (1991; see the review above)] and uses here the local twistor connection uniquely associated to an almost Hermitian structure and Lie algebra cohomology in order to construct linear differential invariants of almost Hermitian symmetric structures.
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CR-SUBMANIFOLDS OF HYPERBOLICAL ALMOST HERMITIAN MANIFOLDS

Demonstratio Mathematica, 1990
Summary: The aim of this paper is to study the class of CR-submanifolds of hyperbolical almost Hermitian manifolds, by following the same ideas of those used in the case of CR-submanifolds of almost Hermitian manifolds [\textit{A. Bejancu}, Geometry of CR-submanifolds (1986; Zbl 0605.53001)].
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