Results 11 to 20 of about 3,819,966 (316)

Dunkl Hyperbolic Equations [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We introduce and study the Dunkl symmetric systems. We prove the well-posedness results for the Cauchy problem for these systems. Eventually we describe the finite speed of it. Next the semi-linear Dunkl-wave equations are also studied.
Hatem Mejjaoli
doaj   +8 more sources

Hyperbolic Methods for Einstein’s Equations [PDF]

open access: yesLiving Reviews in Relativity, 1998
I review evolutionary aspects of general relativity, in particular those related to the hyperbolic character of the field equations and to the applications or consequences that this property entails.
Reula Oscar
exaly   +6 more sources

Contact Geometry of Hyperbolic Equations of Generic Type [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We study the contact geometry of scalar second order hyperbolic equations in the plane of generic type. Following a derivation of parametrized contact-invariants to distinguish Monge-Ampère (class 6-6), Goursat (class 6-7) and generic (class 7-7 ...
Dennis The
doaj   +4 more sources

Existence of pseudo almost periodic solutions to some classes of partial hyperbolic evolution equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2007
The paper examines the existence of pseudo almost periodic solutions to some classes of partial hyperbolic evolution equations. Namely, some sufficient conditions for the existence and uniqueness of pseudo almost periodic solutions to those classes of ...
Toka Diagana
doaj   +6 more sources

Inverse problems for hyperbolic equations [PDF]

open access: yes, 2006
We give a survey of author's results on the inverse hyperbolic problems with time-dependent and time-independent coefficients. We consider the case of hyperbolic equations with Yang-Mills potentials and the case of domains with obstacles. In particular, we gave a stability estimate for the broken X-ray transform in the case of one convex obstacle in ...
G. Eskin
openaire   +4 more sources

Quasilinear hyperbolic equations with hysteresis

open access: yesAnnales de l'Institut Henri Poincaré C, Analyse non linéaire, 2002
Plasticity, ferromagnetism, ferroelectricity and other phenomena lead to quasi-linear hyperbolic equations of the form \frac{\partial ^{2}}{\partial t^{2}}\left[u + F\left(u\right)\right] + Au = f, where is a (possibly discontinuous) hysteresis operator, and
A. Visintin
openaire   +6 more sources

Asymptotics of the solution of the hyperbolic system with a small parameter

open access: yesMANAS: Journal of Engineering, 2022
Asymptotic study of singularly perturbed differential equations of hyperbolic type has received relatively little attention from researchers. In this paper, the asymptotic solution of the singularly perturbed Cauchy problem for a hyperbolic system is ...
Asan Omuraliev, Ella Abylaeva
doaj   +1 more source

The Fuchsian approach to global existence for hyperbolic equations [PDF]

open access: yesCommunications in Partial Differential Equations, 2019
We analyze the Cauchy problem for symmetric hyperbolic equations with a time singularity of Fuchsian type and establish a global existence theory along with decay estimates for evolutions toward the singular time under a small initial data assumption. We,
F. Beyer   +2 more
semanticscholar   +1 more source

A comparative study for the numerical approximation of 1D and 2D hyperbolic telegraph equations with UAT and UAH tension B-spline DQM

open access: yesNonlinear Engineering, 2023
Two numerical regimes for the one- and two-dimensional hyperbolic telegraph equations are contrasted in this article. The first implemented regime is uniform algebraic trigonometric tension B-spline DQM, while the second implemented regime is uniform ...
Kapoor Mamta
doaj   +1 more source

On the Superstability of the Pexider Type Trigonometric Functional Equation

open access: yesJournal of Inequalities and Applications, 2010
We will investigate the superstability of the (hyperbolic) trigonometric functional equation from the following functional equations: f(x+y)±g(x−y)=λf(x)g(y) andf(x+y)±g(x−y)=λg(x)f(y), which can be considered ...
Gwang Hui Kim
doaj   +2 more sources

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