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We propose a variational approach to solve Cauchy problems for parabolic equations and systems independently of regularity theory for solutions. This produces a universal and conceptually simple construction of fundamental solution…

偏微分方程分析 · 数学 2023-10-09 Pascal Auscher , Moritz Egert

Parabolic integro-differential nondegenerate Cauchy problem is considered in the scale of L_{p} spaces of functions whose regularity is defined by a Levy measure with O-regulary varying radial profile. Existence and uniqueness of a solution…

概率论 · 数学 2019-10-15 R. Mikulevicius , C. Phonsom

Various aspects of the Cauchy problem for the Einstein equations are surveyed, with the emphasis on local solutions of the evolution equations. Particular attention is payed to giving a clear explanation of conceptual issues which arise in…

广义相对论与量子宇宙学 · 物理学 2011-04-21 H. Friedrich , A. D. Rendall

We consider the strictly hyperbolic Cauchy problem \begin{align*} &D_t^m u - \sum\limits_{j = 0}^{m-1} \sum\limits_{|\gamma|+j = m} a_{m-j,\,\gamma}(t,\,x) D_x^\gamma D_t^j u = 0, \newline &D_t^{k-1}u(0,\,x) = g_k(x),\,k = 1,\,\ldots,\,m,…

偏微分方程分析 · 数学 2018-07-17 Daniel Lorenz

We consider weighted p-Laplace type equations with homogeneous Neumann boundary conditions in convex domains, where the weight is a log-concave function which may degenerate at the boundary. In the case of bounded domains, we provide sharp…

偏微分方程分析 · 数学 2025-01-14 Carlo Alberto Antonini , Giulio Ciraolo , Francesco Pagliarin

In this paper we prove existence of nonnegative solutions to parabolic Cauchy-Dirichlet problems with superlinear gradient terms which are possibly singular. The model equation is \[ u_t - \Delta_pu=g(u)|\nabla u|^q+h(u)f(t,x)\qquad…

偏微分方程分析 · 数学 2025-01-23 Martina Magliocca , Francescantonio Oliva

In this paper, we consider the global well-posedness and time-decay rates of solution to the Cauchy problem for 3D convective Cahn-Hilliard equation with double-well potential via a refined pure energy method. In particular, the optimal…

偏微分方程分析 · 数学 2020-07-15 Xiaopeng Zhao

In this paper we establish optimal solvability results, that is, maximal regularity theorems, for the Cauchy problem for linear parabolic differential equations of arbitrary order acting on sections of tensor bundles over boundaryless…

偏微分方程分析 · 数学 2020-07-28 Herbert Amann

In this paper, we consider the Cauchy problem for the degenerate parabolic equations on the Heisenberg groups with power law non-linearities. We obtain Fujita-type critical exponents, which depend on the homogeneous dimension of the…

偏微分方程分析 · 数学 2024-02-12 Ahmad Z. Fino , Michael Ruzhansky , Berikbol T. Torebek

We are concerned in this paper with the degenerate fractional diffusion advection equations posed in bounded domains. Due to a suitable formulation, we show the existence of weak entropy solutions for measurable and bounded initial and…

偏微分方程分析 · 数学 2022-10-10 Gerardo Huaroto , Wladimir Neves

It is studied the Cauchy problem for the equations of Burgers' type but with bounded dissipation flux. Such equations degenerate to hyperbolic ones as the velocity gradient tends to infinity. Thus the discontinuous solutions are permitted.…

偏微分方程分析 · 数学 2007-05-23 Yuri G. Rykov

We consider solutions to linear parabolic equations with initial data decaying at spatial infinity. For a class of advection-diffusion equations with a spatially dependent velocity field, we study the behavior of solutions as time tends to…

偏微分方程分析 · 数学 2007-05-23 Oliver C. Schnürer , Hartmut R. Schwetlick

In this work, we prove existence and uniqueness of a bounded viscosity solution for the Cauchy problem of degenerate parabolic equations with variable exponent coefficients. We construct the solution directly using the stochastic…

偏微分方程分析 · 数学 2025-11-13 Mustafa Avci

We consider Cauchy problem for a divergence form second order parabolic operator with rapidly oscillating coefficients that are periodic in spatial variable and random stationary ergodic in time. As was proved in [25] and [13] in this case…

偏微分方程分析 · 数学 2020-10-02 Marina Kleptsyna , Andrey Piatnitski , Alexandre Popier

We consider weak solutions $u:\Omega_{T}\rightarrow\mathbb{R}^{N}$ to parabolic systems of the type \[ u_{t}-\mathrm{div}\,A(x,t,Du)=f \qquad \mathrm{in}\ \Omega_{T}=\Omega\times(0,T), \] where $\Omega$ is a bounded open subset of…

偏微分方程分析 · 数学 2024-05-22 Pasquale Ambrosio , Fabian Bäuerlein

We consider a family of Kirchhoff equations with a small parameter epsilon in front of the second-order time-derivative, and a dissipation term with a coefficient which tends to 0 as t -> +infinity. It is well-known that, when the decay of…

偏微分方程分析 · 数学 2012-03-30 Marina Ghisi , Massimo Gobbino

Singular degenerate differential operator equations are studied. The uniform separability of boundary value problems for degenerate elliptic equation and optimal regularity properties of Cauchy problem for degenerate parabolic equation are…

偏微分方程分析 · 数学 2017-07-07 Veli Shakhmurov

This paper concerns the Cauchy problem of the nonhomogeneous incompressible magnetohydrodynamic (MHD) equations on the whole two-dimensional (2D) space with vacuum as far field density. In particular, the initial density can have compact…

偏微分方程分析 · 数学 2015-06-17 Boqiang Lv , Zhonghai Xu , Xin Zhong

In this paper the well-posedness of some degenerate parabolic equations with a dynamic boundary condition is considered. To characterize the target degenerate parabolic equation from the Cahn-Hilliard system, the nonlinear term coming from…

偏微分方程分析 · 数学 2016-08-30 Takeshi Fukao

This paper is concerned with the strong solution to the Cauchy-Dirichlet problem for backward stochastic partial differential equations of parabolic type. Existence and uniqueness theorems are obtained, due to an application of the…

概率论 · 数学 2010-06-14 Kai Du , Shanjian Tang