Results 91 to 100 of about 85,217 (188)

On Ricci Solitons and Curvature Properties of Doubly Warped Products with QSMC

open access: yesAxioms
This paper explores the geometric interplay between the Levi–Civita connection and the quarter-symmetric metric connection on doubly warped product manifolds.
Md Aquib   +3 more
doaj   +1 more source

The indefinite metric of R. Mrugala and the geometry of the thermodynamical phase space

open access: yes, 2005
We study the indefinite metric $G$ in the contact phase space $(P,\theta)$ of a homogeneous thermodynamical system introduced by R. Mrugala. We calculate the curvature tensor, Killing vector fields, second fundamental form of Legendre submanifolds of $P$
Preston, Serge, Vargo,
core  

Differentiable Manifolds and Geometric Structures

open access: yesMathematics
This editorial presents 26 research articles published in the Special Issue entitled Differentiable Manifolds and Geometric Structures of the MDPI Mathematics journal, which covers a wide range of topics particularly from the geometry of (pseudo ...
Adara M. Blaga
doaj   +1 more source

Geometry of Weak Metric f-Manifolds: A Survey

open access: yesMathematics
The interest of geometers in f-structures is motivated by the study of the dynamics of contact foliations, as well as their applications in physics. A weak f-structure on a smooth manifold, introduced by the author and R. Wolak, generalizes K.
Vladimir Rovenski
doaj   +1 more source

Holonomy, Ricci tensor and Killing vector fields [PDF]

open access: yesProceedings of the American Mathematical Society, 1961
openaire   +2 more sources

Quantization of Midisuperspace Models

open access: yesLiving Reviews in Relativity, 2010
We give a comprehensive review of the quantization of midisuperspace models. Though the main focus of the paper is on quantum aspects, we also provide an introduction to several classical points related to the definition of these models.
J. Fernando Barbero G.   +1 more
doaj  

Reconstructing Isometry Groups From Killing Vector Fields

open access: yes
Abstract This work aims to explore a novel relation between Killing vector fields and Lie algebras using induced vector fields. On one hand, Killing vector fields on a (pseudo) Riemannian manifold are related to directions of local isometries along it.
Thales B. S. F. Rodrigues, B. F. Rizzuti
openaire   +1 more source

Isometries of Spacetimes Without Observer Horizons. [PDF]

open access: yesCommun Math Phys
García-Heveling L, Zeghib A.
europepmc   +1 more source

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