Results 101 to 110 of about 581 (202)

Learning group invariant Calabi–Yau metrics by fundamental domain projections

Machine Learning: Science and Technology
We present new invariant machine learning models that approximate the Ricci-flat metric on Calabi–Yau (CY) manifolds with discrete symmetries. We accomplish this by combining state of the art models for predicting such metrics, based on the so-called φ ...
Yacoub Hendi, Magdalena Larfors, Moritz Walden   +2 more
doaj   +1 more source

GEOMETRIZED VACUUM PHYSICS. PART II: ALGEBRA OF SIGNA-TURES

Avances en Ciencias e Ingeniería, 2023
This article is the second part of a scientific project under the general name "Geometrized vacuum physics". On the basis of the Algebra of Stignatures presented in the previous article (Batanov-Gaukhman, 2023), this article devel-ops the main provisions
Mikhail Batanov-Gaukhman
doaj  

A Construction of Complete Ricci-flat K��hler Manifolds

, 2008
a reference ...
openaire   +2 more sources

Conformally Flat Manifolds and a Pinching Problem on the Ricci Tensor [PDF]

, 1976
Samuel I. Goldberg, Mitsutaka Okumura
openalex   +1 more source

$ \eta $-Ricci-Bourguignon solitons in an almost pseudo-$ W_8 $ flat and $ M $-projective flat symmetric Lorentzian Kähler space-time manifold

AIMS Mathematics
In this paper, we investigated $ \eta $-Ricci-Bourguignon solitons within the framework of almost pseudo-$ W_8 $ flat and $ M $-projective flat symmetric Lorentzian Kähler space-time manifolds that satisfy the Einstein field equation with and without a ...
B. B. Chaturvedi, Prabhawati Bhagat, Mohammad Nazrul Islam Khan   +2 more
doaj   +1 more source

The classification of complete locally conformally flat manifolds of nonnegative Ricci curvature [PDF]

, 1994
Shunhui Zhu
openalex   +1 more source

On a type of spacetime [PDF]

Mathematica Moravica, 2014
The object of the present paper is to study a special type of spacetime. It is proved that in a conformally flat (W RS)4 spacetime with non-zero scalar curvature the vector field p defined by ɡ(X, p) = E(X) is irrotational and the integral curves of the ...
Mallick Sahanous, Chand De Uday
doaj  

On the local extension of Killing vector-fields in Ricci flat manifolds [PDF]

, 2011
Alexandru D. Ionescu, Sergiù Klainerman
openalex   +1 more source

The global sections of chiral de Rham complexes on compact Ricci-flat Kähler manifolds II

, 2021
Andrew R. Linshaw, Bailin Song
openalex   +1 more source

Conformally flat manifolds with nonnegative Ricci curvature [PDF]

, 2004
Gilles Carron, Marc Herzlich
openalex   +1 more source