Results 51 to 60 of about 87,863 (252)

Resolutions of non-regular Ricci-flat Kahler cones [PDF]

, 2007
We present explicit constructions of complete Ricci-flat Kahler metrics that are asymptotic to cones over non-regular Sasaki-Einstein manifolds. The metrics are constructed from a complete Kahler-Einstein manifold (V,g_V) of positive Ricci curvature and ...
Apostolov, Apostolov, Boyer, Bérard-Bergery, Calabi, Candelas, Chen, Chen, Cvetic, Dario Martelli, Gauntlett, Gauntlett, Gauntlett, James Sparks, Kobayashi, Kollár, Lu, Maldacena, Martelli, Oota, Page, Page, Pando Zayas, Tian, Tian   +24 more
core   +3 more sources

A (CHR)3-flat trans-Sasakian manifold

Pracì Mìžnarodnogo Geometričnogo Centru, 2019
In [4] M. Prvanovic considered several curvaturelike tensors defined for Hermitian manifolds. Developing her ideas in [3], we defined in an almost contact Riemannian manifold another new curvaturelike tensor field, which is called a contact ...
Koji Matsumoto
doaj   +1 more source

On δ- Lorentzian trans Sasakian manifold with semi-symmetric metric connection

Boletim da Sociedade Paranaense de Matemática, 2020
The aim of the present research is to study the δ-Lorentzian trans Sasakian manifolds with a semi-symmetric metric connection. We have found the expressions for curvature tensors, Ricci curvature tensors and scalar curvature of the δ-Lorentzian trans ...
Mohd Danish Siddiqi
doaj   +1 more source

A Construction of Complete Ricci-flat Kähler Manifolds

, 2008
a reference ...
Craig van Coevering
openalex   +4 more sources

Some Curvature Conditions on a Para-Sasakian Manifold with Canonical Paracontact Connection

International Journal of Mathematics and Mathematical Sciences, 2012
We study canonical paracontact connection on a para-Sasakian manifold. We prove that a Ricci-flat para-Sasakian manifold with respect to canonical paracontact connection is an η-Einstein manifold.
Bilal Eftal Acet, Erol Kılıç, Selcen Yüksel Perktaş   +2 more
doaj   +1 more source

Yang-Mills Instantons from Gravitational Instantons

, 2011
We show that every gravitational instantons are SU(2) Yang-Mills instantons on a Ricci-flat four manifold although the reverse is not necessarily true. It is shown that gravitational instantons satisfy exactly the same self-duality equation of SU(2) Yang-
Oh, John J., Park, Chanyong, Yang, Hyun Seok   +2 more
core   +1 more source

The Morrison-Kawamata Cone Conjecture and Abundance on Ricci flat manifolds [PDF]

arXiv: Algebraic Geometry, 2016
the final version, to appear in the proceedings of the conference Uniformization, Riemann-Hilbert Correspondence, Calabi-Yau manifolds, and Picard-Fuchs Equations, held at the Institut Mittag-Leffler, July ...
Vladimir Lazić, Thomas Peternell, Keiji Oguiso   +2 more
openaire   +2 more sources

On complete Ricci-flat metrics on open Kähler manifolds [PDF]

Matemática Contemporânea, 2006
This paper has two purposes. First it partially extends the result in the author's previous work concerning the asymptotic expansion of the Tian-Yau metrics, by considering a slightly larger class of quasi-projective manifolds. This text is also intended to provide a quick introductory reference to the study of Ricci-flat metrics on open manifolds.
openaire   +2 more sources

Curvature analysis of concircular trajectories in doubly warped product manifolds

AIMS Mathematics
The aim of this research paper was to explore the various characteristics of the doubly warped product manifold, focusing particularly on aspects such as the Hessian, Riemannian curvature, Ricci curvature, and concircular curvature tensor components.
Fahad Sikander, Tanveer Fatima , Sharief Deshmukh, Ayman Elsharkawy   +3 more
doaj   +1 more source

Numerical metrics, curvature expansions and Calabi-Yau manifolds

Journal of High Energy Physics, 2020
We discuss the extent to which numerical techniques for computing approximations to Ricci-flat metrics can be used to investigate hierarchies of curvature scales on Calabi-Yau manifolds.
Wei Cui, James Gray
doaj   +1 more source