Results 11 to 20 of about 537,575 (240)

ENERGY ESTIMATES FOR WEAKLY HYPERBOLIC SYSTEMS OF THE FIRST ORDER [PDF]

open access: yesCommunications in Contemporary Mathematics, 2005
For a class of first-order weakly hyperbolic pseudo-differential systems with finite time degeneracy, well-posedness of the Cauchy problem is proved in an adapted scale of Sobolev spaces. These Sobolev spaces are constructed in correspondence to the hyperbolic operator under consideration, making use of ideas from the theory of elliptic boundary value
Dreher, M, Witt, Ingo
core   +6 more sources

A stochastic Galerkin method for first-order quasilinear hyperbolic systems with uncertainty [PDF]

open access: yesJournal of Computational Physics, 2016
This paper is concerned with generalized polynomial chaos (gPC) approximation for first-order quasilinear hyperbolic systems with uncertainty. The one-dimensional (1D) hyperbolic system is first symmetrized with the aid of left eigenvector matrix of the ...
Kailiang Wu, Huazhong Tang, D. Xiu
semanticscholar   +2 more sources

Hyperbolic to Parabolic Relaxation Theory for Quasilinear First Order Systems

open access: yesJournal of Differential Equations, 2000
This paper is concerned with a quasilinear first-order system with a source term, and investigates the relaxation phenomena where the relaxed equilibria are described by means of an equation (or a system) of parabolic type. In particular a one-dimensional \(2\times 2\) system of genuinely nonlinear hyperbolic balance laws with a strong dissipative ...
MARCATI, PIERANGELO, RUBINO, BRUNO
openaire   +3 more sources

A stable finite element method for initial-boundary value problems for first-order hyperbolic systems

open access: yes, 1981
A nonstandard finite element method for initial-boundary value problems for first-order hyperbolic systems in one space dimension with general boundary conditions is analyzed. The method can be considered as a generalization of the box scheme.
R. Winther
semanticscholar   +2 more sources

Time-asymptotic stability for first-order symmetric hyperbolic systems of balance laws in dissipative compressible fluid dynamics

open access: yesQuarterly of Applied Mathematics, 2022
This paper identifies a non-(or /iso-)thermal variant of Ruggeri’s 1983 formulation of viscous heat-conductive fluid dynamics as a hyperbolic system of balance laws and shows that both the original model and this variant have (a) time-asymptotically ...
H. Freistühler
semanticscholar   +1 more source

Null controllability and finite-time stabilization in minimal time of one-dimensional first-order 2 × 2 linear hyperbolic systems [PDF]

open access: yesE S A I M: Control, Optimisation and Calculus of Variations, 2020
The goal of this article is to present the minimal time needed for the null controllability and finite-time stabilization of one-dimensional first-order 2 × 2 linear hyperbolic systems.
Long Hu, Guillaume Olive
semanticscholar   +1 more source

Classical bounded and almost periodic solutions to quasilinear first-order hyperbolic systems in a strip [PDF]

open access: yesJournal of Differential Equations, 2018
We consider boundary value problems for quasilinear first-order one-dimensional hyperbolic systems in a strip. The boundary conditions are supposed to be of a smoothing type, in the sense that the $L^2$-generalized solutions to the initial-boundary value
I. Kmit, L. Recke, V. Tkachenko
semanticscholar   +1 more source

Analytic critical points of charged Rényi entropies from hyperbolic black holes

open access: yesJournal of High Energy Physics, 2021
We analytically study phase transitions of holographic charged Rényi entropies in two gravitational systems dual to the N $$ \mathcal{N} $$ = 4 super-Yang-Mills theory at finite density and zero temperature.
Jie Ren
doaj   +1 more source

Applying dynamical systems techniques to real ocean drifters [PDF]

open access: yesNonlinear Processes in Geophysics, 2022
This paper presents the first comprehensive comparison of several different dynamical-systems-based measures of stirring and Lagrangian coherence, computed from real ocean drifters.
I. I. Rypina   +3 more
doaj   +1 more source

Leaderless Consensus of Semilinear Hyperbolic Multiagent Systems with Semipositive or Seminegative Definite Convection

open access: yesDiscrete Dynamics in Nature and Society, 2022
This paper deals with a leaderless consensus of semilinear first-order hyperbolic partial differential equation-based multiagent systems (HPDEMASs). A consensus controller under an undirected graph is designed.
Jiashu Dai   +5 more
doaj   +1 more source

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