Results 41 to 50 of about 6,660 (232)

Weak KAM for commuting Hamiltonians [PDF]

open access: yes, 2010
For two commuting Tonelli Hamiltonians, we recover the commutation of the Lax-Oleinik semi-groups, a result of Barles and Tourin ([BT01]), using a direct geometrical method (Stoke's theorem).
Arnol′d V I   +14 more
core   +1 more source

Hessian equations of Krylov type on compact Hermitian manifolds

open access: yesOpen Mathematics, 2022
In this article, we are concerned with the equations of Krylov type on compact Hermitian manifolds, which are in the form of the linear combinations of the elementary symmetric functions of a Hermitian matrix.
Zhou Jundong, Chu Yawei
doaj   +1 more source

On the energy dissipation rate of solutions to the compressible isentropic Euler system [PDF]

open access: yes, 2013
In this paper we extend and complement some recent results by Chiodaroli, De Lellis and Kreml on the well-posedness issue for weak solutions of the compressible isentropic Euler system in $2$ space dimensions with pressure law $p(\rho)=\rho^\gamma ...
Chiodaroli, Elisabetta, Kreml, Ondřej
core   +3 more sources

Permanence in $N$ species nonautonomous competitive reaction-diffusion-advection system of Kolmogorov type in heterogeneous environment

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
One of the important concept in population dynamics is finding conditions under which the population can coexist. Mathematically formulation of this problem we call permanence or uniform persistence.
Joanna Balbus
doaj   +1 more source

Non-uniqueness and h-principle for H\"older-continuous weak solutions of the Euler equations

open access: yes, 2017
In this paper we address the Cauchy problem for the incompressible Euler equations in the periodic setting. Based on estimates developed in [Buckmaster-De Lellis-Isett-Sz\'ekelyhidi], we prove that the set of H\"older $1\slash 5-\eps$ wild initial data ...
Daneri, Sara, Székelyhidi Jr, László
core   +1 more source

The vanishing discount problem and viscosity Mather measures. Part 2: boundary value problems [PDF]

open access: yes, 2016
In arXiv:1603.01051 (Part 1 of this series), we have introduced a variational approach to studying the vanishing discount problem for fully nonlinear, degenerate elliptic, partial differential equations in a torus.
Ishii, Hitoshi   +2 more
core   +1 more source

Sign-changing and multiple solutions for the p-Laplacian

open access: yesAbstract and Applied Analysis, 2002
We obtain a positive solution, a negative solution, and a sign-changing solution for a class of p-Laplacian problems with jumping nonlinearities using variational and super-subsolution methods.
Siegfried Carl, Kanishka Perera
doaj   +1 more source

A rigorous setting for the reinitialization of first order level set equations [PDF]

open access: yes, 2015
In this paper we set up a rigorous justification for the reinitialization algorithm. Using the theory of viscosity solutions, we propose a well-posed Hamilton-Jacobi equation with a parameter, which is derived from homogenization for a Hamiltonian ...
Hamamuki, Nao, Ntovoris, Eleftherios
core   +3 more sources

Splitting for Rare Event Simulation: A Large Deviation Approach to Design and Analysis [PDF]

open access: yes, 2007
Particle splitting methods are considered for the estimation of rare events. The probability of interest is that a Markov process first enters a set $B$ before another set $A$, and it is assumed that this probability satisfies a large deviation scaling ...
Dean, Thomas, Dupuis, Paul
core   +2 more sources

An overview of some recent results on the Euler system of isentropic gas dynamics

open access: yes, 2015
In this overview we discuss some recent results of non--uniqueness for the isentropic Euler equations of gas dynamics with particular attention to the role of some admissibility criteria proposed in the literature.Comment: 10 pages.
Chiodaroli, Elisabetta, Kreml, Ondrej
core   +1 more source

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