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Displaying 181 – 200 of 479

K-contact A-manifolds

WŁodzimierz Jelonek (1998)

Colloquium Mathematicae

The aim of this paper is to give a characterization of regular K-contact A-manifolds.

Killing tensors and Einstein-Weyl geometry

Włodzimierz Jelonek (1999)

Colloquium Mathematicae

We give a description of compact Einstein-Weyl manifolds in terms of Killing tensors.

Killing tensors and warped product

Włodzimierz Jelonek (2000)

Annales Polonici Mathematici

We present some examples of Killing tensors and give their geometric interpretation. We give new examples of non-compact complete and compact Riemannian manifolds whose Ricci tensor ϱ satisfies the condition $\nabla_{X} ϱ (X, X) = 2 / (n + 2) X τ g (X, X)$

Killing vector fields of constant length on Riemannian manifolds.

Berestovskij, V.N., Nikonorov, Yu.G. (2008)

Sibirskij Matematicheskij Zhurnal

Komplexní vesmír Rogera Penrose

Simon G. Gindikin (1986)

Pokroky matematiky, fyziky a astronomie

Lagrangian submanifolds of quaternion Kaehlerian manifolds satisfying Chen's equality.

Hong, Yi, Houh, Chorng Shi (1998)

Beiträge zur Algebra und Geometrie

Les variétés de dimension 4 à signature non nulle dont la courbure est harmonique sont d'Einstein.

Jean Pierre Bourguignon (1981)

Inventiones mathematicae

Lightlike hypersurfaces of an indefinite Kaehler manifold of a quasi-constant curvature

Dae Ho Jin, Jae Won Lee (2019)

Communications in Mathematics

We study lightlike hypersurfaces $M$ of an indefinite Kaehler manifold $\bar{M}$ of quasi-constant curvature subject to the condition that the characteristic vector field $ζ$ of $\bar{M}$ is tangent to $M$ . First, we provide a new result for such a lightlike hypersurface. Next, we investigate such a lightlike hypersurface $M$ of $\bar{M}$ such that (1) the screen distribution $S (T M)$ is totally umbilical or (2) $M$ is screen conformal.

Lightlike submanifolds of indefinite Sasakian manifolds.

Duggal, K.L., Sahin, B. (2007)

International Journal of Mathematics and Mathematical Sciences

Local constraints on Einstein-Weyl geometries.

M.G. Eastwood, K.P. Tod (1997)

Journal für die reine und angewandte Mathematik

Local existence of Ricci Solitons.

Thomas A. Ivey (1996)

Manuscripta mathematica

Locally conformally Kähler metrics on Hopf surfaces

Paul Gauduchon, Liviu Ornea (1998)

Annales de l'institut Fourier

A primary Hopf surface is a compact complex surface with universal cover $ℂ^{2} - {(0, 0)}$ and cyclic fundamental group generated by the transformation $(u, v) \mapsto (α u + λ v^{m}, β v)$ , $m \in ℤ$ , and $α, β, λ \in ℂ$ such that $∣ α ∣ \geq ∣ β ∣ > 1$ and $(α - β^{m}) λ = 0$ . Being diffeomorphic with $S^{3} \times S^{1}$ Hopf surfaces cannot admit any Kähler metric. However, it was known that for $λ = 0$ and $∣ α ∣ = ∣ β ∣$ they admit a locally conformally Kähler metric with parallel Lee form. We here provide the construction of a locally conformally Kähler metric with parallel Lee form for all primary Hopf surfaces of class $1$ ( $λ = 0$ ). We also show...

Currently displaying 181 – 200 of 479

Previous Page 10 Next

Displaying 181 – 200 of 479

K-contact A-manifolds

Killing tensors and Einstein-Weyl geometry

Killing tensors and warped product

Killing vector fields of constant length on Riemannian manifolds.

Komplexní vesmír Rogera Penrose

Lagrangian submanifolds of quaternion Kaehlerian manifolds satisfying Chen's equality.

Les variétés de dimension 4 à signature non nulle dont la courbure est harmonique sont d'Einstein.

Lightlike hypersurfaces of an indefinite Kaehler manifold of a quasi-constant curvature

Lightlike submanifolds of indefinite Sasakian manifolds.

Local constraints on Einstein-Weyl geometries.

Local existence of Ricci Solitons.

Locally conformally Kähler metrics on Hopf surfaces

Lokale Geometrie des Radius in Riemannschen Mannigfaltigkeiten II

Lokale Geometrie des Radius in Riemannschen Mannigfaltigkeiten I

Manifolds with strong harmonic boundaries but without Green's functions of clamped bodies

Maps of manifolds with indefinite metrics preserving certain geometrical entities.

Maximal tubes under the deformations of 3-dimensional hyperbolic cone-manifolds.

Mean and scalar curvature homogeneous Riemannian manifolds.

Mean curvature and shape operator of slant immersions in a Sasakian space form.

Métriques d'Einstein à cusps et équations de Seiberg-Witten.

Currently displaying 181 – 200 of 479