Results 151 to 160 of about 535 (181)

Coarse entropy of metric spaces. [PDF]

Geom Dedic
Geller W, Misiurewicz M, Sawicki D.
europepmc   +1 more source

Thermodynamics à la Souriau on Kähler Non-Compact Symmetric Spaces for Cartan Neural Networks. [PDF]

Entropy (Basel)
Fré PG, Sorin AS, Trigiante M.
europepmc   +1 more source

Comparison of the Capacity of Several Machine Learning Tools to Assist Immunofluorescence-Based Detection of Anti-Neutrophil Cytoplasmic Antibodies. [PDF]

Int J Mol Sci
Bertin D, Bongrand P, Bardin N.
europepmc   +1 more source

Homotheties of Finsler manifolds

Homotheties of Finsler manifolds
openaire   +1 more source

Characterisation of Large-Sized REBaCuO Bulks for Application in Flux Modulation Machines. [PDF]

Materials (Basel)
Nouailhetas Q, Xing Y, Dorget R, Dirahoui W, Guijosa S, Trillaud F, Lévêque J, Noudem JG, Labbé J, Berger K.   +9 more
europepmc   +1 more source

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Formalism for spacetimes with a homothety

Classical and Quantum Gravity, 2002
In this paper, the formalism developed by Fayos and Sopuerta for the study of spacetimes admitting a Killing vectors is generalized in three ways: the case of homothetic vector is covered, the tetrad is not assumed to be aligned with the (homothetic) bivector and the tetrad is not assumed to be normalized.
exaly   +3 more sources

Simply-transitive homothety groups

General Relativity and Gravitation, 1991
The author uses the spin-coefficient formalism of Penrose and Rindler to obtain spacetimes admitting a simply-transitive group of homotheties. Vacuum metrics with a five-dimensional homothety group are also considered.
exaly   +3 more sources

Singularities and homothety groups in spacetime

Classical and Quantum Gravity, 1988
Some inaccuracies in the article of \textit{C. B. Collins} and \textit{J. M. Lang} in ibid. 3, 1143-1150 (1986; Zbl 0604.53045)] are corrected and commented here leading to a more general version of the main result given there.
exaly   +3 more sources

All vacuum Bianchi I metrics with a homothety

Classical and Quantum Gravity, 1991
All vacuum metrics with a four-parameter homothety group containing a three-dimensional Abelian subgroup are found. These include the Kasner family of metrics, metrics related to the Kasner family by complex transformations (which include a family of vacuum metrics found by Lewis in 1932 and a metric found by Petrov in 1962 to be the only vacuum metric
C B G McIntosh, J D Steele
exaly   +2 more sources

Homothety Homogeneity and Local Homogeneity

Synthesis Lectures on Mathematics and Statistics, 2017
Ramón Vázquez-Lorenzo, Esteban Calviño-Louzao, Peter Gilkey   +2 more
exaly   +2 more sources