Results 21 to 30 of about 34,900 (279)

Global Weak Solution, Uniqueness and Exponential Decay for a Class of Degenerate Hyperbolic Equation

open access: yesCommunications in Advanced Mathematical Sciences, 2022
This paper deals with existence, uniqueness and energy decay of solutions to a degenerate hyperbolic equations given by \begin{align*} K(x,t)u'' - M\left(\int_\Omega |\nabla u|^2\,dx \right) \Delta u - \Delta u' = 0, \end{align*} with operator ...
Carlos Raposo, Ducival Pereira
doaj   +1 more source

Degenerate hyperbolic equations with lower degree degeneracy [PDF]

open access: yesProceedings of the American Mathematical Society, 2014
Summary: We prove that the Cauchy problem of degenerate hyperbolic equations is well-posed if leading coefficients are degenerate at a low degree.
Han, Qing, Liu, Yannan
openaire   +2 more sources

Identification for Degenerate Differential Problems of Hyperbolic Type

open access: yesBruno Pini Mathematical Analysis Seminar, 2017
A degenerate identification problem in Hilbert space is considered. An application to second order evolution equations of hyperbolic type is also provided. The abstract results are applied to concrete differential problems.
Angelo Favini
doaj   +1 more source

Stochastic non-isotropic degenerate parabolic–hyperbolic equations

open access: yesStochastic Processes and their Applications, 2017
35 ...
Benjamin Gess, Panagiotis E. Souganidis
openaire   +2 more sources

The Dirichlet Problem for Stochastic Degenerate Parabolic-Hyperbolic Equations

open access: yesCommunications in Mathematical Analysis and Applications, 2022
Summary: We consider the Dirichlet problem for a quasilinear degenerate parabolic stochastic partial differential equation with multiplicative noise and nonhomogeneous Dirichlet boundary condition. We introduce the definition of kinetic solution for this problem and prove existence and uniqueness of solutions. For the uniqueness of kinetic solutions we
Frid, Hermano   +4 more
openaire   +2 more sources

Identification for General Degenerate Problems of Hyperbolic Type

open access: yesBruno Pini Mathematical Analysis Seminar, 2016
A degenerate identification problem in Hilbert space is described, improving a previous paper [2]. An application to second order evolution equations of hyperbolic type is given.
Angelo Favini, Gabriela Marinoschi
doaj   +1 more source

Uniqueness of Entropy Solutions of Nonlinear Elliptic-Parabolic-Hyperbolic Problems in One Dimension Space [PDF]

open access: yes, 2009
We consider a class of elliptic-parabolic-hyperbolic degenerate equations of the form b(u)t — a(u, φ(ux)x= f with homogeneous Dirichlet conditions and initial conditions.
Ouaro, Stanislas
core   +2 more sources

Nonlinear electrodynamics as a symmetric hyperbolic system [PDF]

open access: yes, 2015
Nonlinear theories generalizing Maxwell's electromagnetism and arising from a Lagrangian formalism have dispersion relations in which propagation planes factor into null planes corresponding to two effective metrics which depend on the point-wise values ...
Abalos, Fernando   +3 more
core   +2 more sources

Delta-problems for the generalized Euler-Darboux equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
Degenerate hyperbolic equations are dealing with many important issues for applied nature. While a variety of degenerate equations and boundary conditions, successfully matched to these differential equation, most in the characteristic coordinates ...
Irina N Rodionova   +2 more
doaj   +1 more source

Mixed Cauchy problem with lateral boundary condition for noncharacteristic degenerate hyperbolic equations

open access: yesBoundary Value Problems, 2022
In this paper, in a cylindrical domain D = Ω × ( 0 , T ) $D=\Omega \times (0,T)$ with Ω ⊂ R n $\Omega \subset {R}^{n}$ , we consider a mixed Cauchy problem with a potential lateral boundary condition for the following noncharacteristic degenerated ...
Nurbek Kakharman, Tynysbek Kal’menov
doaj   +1 more source

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