Results 21 to 30 of about 21,501 (172)

Conformally Einstein Products and Nearly Kähler Manifolds

open access: yes, 2008
International audienceIn the first part of this note we study compact Riemannian manifolds (M,g) whose Riemannian product with R is conformally Einstein.
Moroianu, Andrei, Ornea, Liviu
core   +1 more source

Vanishing theorems on compact Chern-Kähler-like Hermitian manifolds

open access: yes, 2023
We show that, under the definiteness of holomorphic sectional curvature, the spaces of some holomorphic tensor fields on compact Chern-Kähler-like Hermitian manifolds are trivial.
Li, Ping
core   +1 more source

Homogeneous structures of linear type on $\epsilon$-Kähler and $\epsilon$-quaternion Kähler manifolds

open access: yes, 2017
We analyze degenerate homogeneous structures of linear type in the pseudo-Kähler and para-Kähler cases. The local form and the holonomy of pseudo-K¨ahler or para-K¨ahler manifolds admitting such structure are obtained.
Luján, Ignacio   +3 more
core   +1 more source

Compact Moduli Spaces of Kähler–Einstein Fano Varieties [PDF]

open access: yes, 2015
We construct geometrically compacti ed moduli spaces of Kähler-Einstein Fano ...
Odaka, Yuji
core   +1 more source

Type I Almost-Homogeneous Manifolds of Cohomogeneity One—IV

open access: yesAxioms, 2018
This paper is one of a series in which we generalize our earlier results on the equivalence of existence of Calabi extremal metrics to the geodesic stability for any type I compact complex almost homogeneous manifolds of cohomogeneity one. In this paper,
Zhuang-Dan Daniel Guan   +2 more
doaj   +1 more source

Minimal two spheres in Kähler–Einstein Fano manifolds

open access: yes, 2005
In this paper we show the existence of stable symplectic non-holomorphic two-spheres in Kähler manifolds of positive constant scalar curvature of real dimension four and in Kähler–Einstein Fano manifolds of real dimension six. Some of the techniques used
Arezzo, Claudio   +2 more
core   +1 more source

Fibred GK geometry and supersymmetric AdS solutions

open access: yesJournal of High Energy Physics, 2019
We continue our study of a general class of N = 2 $$ \mathcal{N}=2 $$ supersymmetric AdS3 × Y7 and AdS2 × Y9 solutions of type IIB and D = 11 supergravity, respectively.
Jerome P. Gauntlett   +2 more
doaj   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

Cohomology of D-complex manifolds

open access: yes, 2012
In order to look for a well-behaved counterpart to Dolbeault cohomology in D-complex geometry, we study the de Rham cohomology of an almost D-complex manifold and its subgroups made up of the classes admitting invariant, respectively anti-invariant ...
Daniele Angella   +4 more
core   +1 more source

Balanced Metrics and Noncommutative Kähler Geometry

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2010
In this paper we show how Einstein metrics are naturally described using the quantization of the algebra of functions C^∞(M) on a Kähler manifold M. In this setup one interprets M as the phase space itself, equipped with the Poisson brackets inherited ...
Sergio Lukic
doaj   +1 more source

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