Results 21 to 30 of about 2,426,099 (326)

On a price formation free boundary model by Lasry & Lions: The Neumann problem [PDF]

open access: yes, 2011
We discuss local and global existence and uniqueness for the price formation free boundary model with homogeneous Neumann boundary conditions introduced by Lasry & Lions in 2007.
Caffarelli, Luis A.   +2 more
core   +3 more sources

Existence and blow-up of solutions for finitely degenerate semilinear parabolic equations with singular potentials

open access: yesCommunications in Analysis and Mechanics, 2023
In this article, we investigate the initial-boundary value problem for a class of finitely degenerate semilinear parabolic equations with singular potential term.
Huiyang Xu
doaj   +1 more source

Global existence of small-norm solutions in the reduced Ostrovsky equation [PDF]

open access: yes, 2013
We use a novel transformation of the reduced Ostrovsky equation to the integrable Tzitz\'eica equation and prove global existence of small-norm solutions in Sobolev space $H^3(R)$.
Grimshaw, Roger, Pelinovsky, Dmitry
core   +3 more sources

Kinetic formulation and global existence for the Hall-Magneto-hydrodynamics system [PDF]

open access: yes, 2011
This paper deals with the derivation and analysis of the the Hall Magneto-Hydrodynamic equations. We first provide a derivation of this system from a two-fluids Euler-Maxwell system for electrons and ions, through a set of scaling limits. We also propose
A. N. Simakov   +25 more
core   +4 more sources

The existence of a compact global attractor for a class of competition model

open access: yesAIMS Mathematics, 2021
This paper is concerned with the existence of a compact global attractor for a class of competition model in n−dimensional (n ≥ 1) domains. Using mathematical induction and more detailed interpolation estimates, especially Gagliardo-Nirenberg inequality,
Yanxia Wu
doaj   +1 more source

Uniform boundedness and extinction results of solutions to a predator–prey system

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
Global existence, positivity, uniform boundedness and extinction results of solutions to a system of reaction-diffusion equations on unbounded domain modeling two species on a predator–prey relationship is considered.
Mokhtar Kirane   +2 more
doaj   +1 more source

Global existence and finite time blow-up of solutions to a nonlocal p-Laplace equation

open access: yesMathematical Modelling and Analysis, 2019
In this paper a class of nonlocal diffusion equations associated with a p-Laplace operator, usually referred to as p-Kirchhoff equations, are studied.
Jian Li, Yuzhu Han
doaj   +1 more source

Global solvability of a chemotaxis-haptotaxis model in the whole 2-d space

open access: yesMathematical Biosciences and Engineering, 2023
This paper investigates a two-dimensional chemotaxis-haptotaxis model $ \begin{eqnarray*} \left\{\begin{array}{lll} u_t = \Delta u-\chi\nabla\cdot(u\nabla v)-\xi\nabla\cdot(u\nabla w),&{} x\in\mathbb{R}^2,\ t>0,\\ v_t = \Delta v-v+u ...
Meng Liu, Yuxiang Li
doaj   +1 more source

ON THE EXISTENCE OF A GLOBAL NEIGHBOURHOOD [PDF]

open access: yesGlasgow Mathematical Journal, 2015
AbstractSuppose that a complex manifoldMis locally embedded into a higher-dimensional neighbourhood as a submanifold. We show that, if the local neighbourhood germs are compatible in a suitable sense, then they glue together to give a global neighbourhood ofM.
Coates, T, Iritani, H
openaire   +4 more sources

Non-existence of global transverse Poincaré sections [PDF]

open access: yesJournal of Geometry and Physics, 2021
We study global transverse Poincar sections and give topological conditions for their existence, showing they never exist in many important cases. We prove that an energy hypersurface possessing global transverse Poincar section is equivalent to the hypersuface having a cosymplectic structure.
openaire   +2 more sources

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