Results 11 to 16 of about 29 (16)

Gravitational field of Schwarzschild soliton

Arab Journal of Mathematical Sciences, 2015
The aim of this paper is to study the gravitational field of Schwarzschild soliton. Use of characteristic of λ-tensor is given to determine the kinds of gravitational fields.
Musavvir Ali, Zafar Ahsan
doaj   +1 more source

A Special Universe and its Massless Scalar Field Mathematical Structure

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
The present paper highlights an exotic universe having a metric which is partially suggested by the metric of an universe without time seen in [2]. The new metric is globally defined and depends on an exotic matter created by some classical waves.
Boskoff Wladimir-Georges, Nicola Aurelian   +1 more
doaj   +1 more source

Penrose junction conditions with Λ : geometric insights into low-regularity metrics for impulsive gravitational waves. [PDF]

Gen Relativ Gravit, 2022
Podolský J, Steinbauer R.
europepmc   +1 more source

Analysis of transmission dynamics of COVID-19 via closed-form solutions of a susceptible-infectious-quarantined-diseased model with a quarantine-adjusted incidence function. [PDF]

Math Methods Appl Sci, 2021
Naz R, Al-Raeei M.
europepmc   +1 more source

Complete classification of spatial surfaces with parallel mean curvature vector in arbitrary non-flat pseudo-Riemannian space forms

Open Mathematics, 2009
Chen Bang-Yen
doaj   +1 more source

Cut-and-paste for impulsive gravitational waves with Λ: the mathematical analysis. [PDF]

Lett Math Phys
Sämann C, Schinnerl B, Steinbauer R, Švarc R.   +3 more
europepmc   +1 more source