Results 51 to 60 of about 130 (124)
Деформации на неутрални почти Келерови многообразия
, 2006 [Apostolova Lilia Nik.; Апостолова Лилия Ник.]; [Petrov Kalin P.; Петров Калин П.]Common deformations for neutral pseudoriemann manifolds with compatible almost complex structure and closed fundamental two-form are considered.
Petrov, Kalin P., Apostolova, Lilia Nik.
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Semi-invariant submersions whose total manifolds are locally product Riemannian
, 2017 We study Riemannian and semi-invariant submersions whose total man-ifolds are locally product Riemannian. The necessary and sufficient conditions for the integrability and totally geodesicness of all distributions which are introduced in the denition of ...
Cem Sayar +6 more
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Pseudoholomorphic punctured spheres in �.S 1 S 2 /: Moduli space parametrizations
, 2014 TAUBES This is the second of two articles that describe the moduli spaces of pseudoholomorphic, multiply punctured spheres in .S 1 S 2 / as defined by a certain natural pair of almost complex structure and symplectic form.
Clifford Henry
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Contact CR-Submanifolds of Kenmotsu Manifolds [PDF]
, 2011 2000 Mathematics Subject Classification: 53C15, 53C42.In this paper, we research some fundamental properties of contact CR-Submanifolds of a Kenmotsu manifold.
Atçeken, Mehmet
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On Almost Norden Statistical Manifolds. [PDF]
Entropy (Basel), 2022 Samereh L, Peyghan E, Mihai I.
europepmc +1 more source
On Kähler-like and G-Kähler-like almost Hermitian manifolds
Complex Manifolds, 2020 We introduce Kähler-like, G-Kähler-like metrics on almost Hermitian manifolds. We prove that a compact Kähler-like and G-Kähler-like almost Hermitian manifold equipped with an almost balanced metric is Kähler.
Kawamura Masaya
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Harmonic proper almost complex structures on Walker 4-manifolds
, 2014 Every Walker 4-manifold M, endowed with a canonical neutral metric, admits a specific almost complex structure called proper. In this note we find the conditions under which a proper almost complex structure is harmonic in the sense of C.
Ul Haq, Absar +2 more
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Почти ермитови структури, туисторни пространства и хармонични изображения
, 2022 [Davidov Johann; Давидов Йохан]In the first part of the paper, we review the notion of an almost-complex structure and some topological obstructions for existence of such a structure.
Davidov, Johann
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, 2003 We deal with a CR-submanifold M of a para-Kählerian manifold M ̃ , which carries a J-skew-symmetric vector field X. It is shown that X defines a global Hamiltonian of the symplectic form Ω onM and JX is a relative infinitesimal automorphism of Ω.
Radu Rosca, Adela Mihai
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Invariant and non-invariant almost complex structures on compact quotients of Lie groups
Complex ManifoldsIn this article, we briefly survey the classical problem of understanding which Lie algebras admit a complex structure, put in the broader perspective of almost complex structures with special properties.
Sillari Lorenzo, Tomassini Adriano
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