Potential estimates for quasi-linear parabolic equations
Vitali Liskevich, Igor I. Skrypnik, Zeev Sobol
对于一类右端具有Radon测度的散度型拟线性退化抛物方程，利用非线性Wolff势给出了其解的逐点估计.
For a class of divergence type quasi-linear degenerate parabolic equations with a Radon measure on the right hand side we derive pointwise estimates for solutions via nonlinear Wolff potentials.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
继续探索
We introduce a notion of quasilinear parabolic equations over metric measure spaces. Under sharp structural conditions, we prove that local weak solutions are locally bounded and satisfy the parabolic Harnack inequality. Applications include the parabolic maximum principle and pointwise estimates for weak solutions.
Pointwise estimates for solutions of singular quasi-linear parabolic equations
对于一类右端具有Radon测度的奇异散度型拟线性抛物方程，利用非线性Wolff势得到了解的逐点估计.
We establish a spatial gradient maximum principle for classical solutions to the initial and Neumann boundary value problem of some quasilinear parabolic equations on smooth convex domains.
Classical solutions to quasilinear parabolic problems with dynamic boundary conditions
研究了具有动态边界条件的线性非自治抛物型方程组。其次，我们应用这些结果证明了一个具有非线性动力边界条件的二阶拟线性系统的经典解的局部存在唯一性定理。
Time-interior gradient estimates for quasilinear parabolic equations
各种各样的拟线性抛物型方程的Dirichlet和Neumann问题的有界光滑解，包括图形各向异性的中曲率流，在振荡和时间上都有梯度界.
Regimes with a singular peaking for a wide class of quasilinear second order parabolic equations are studied. On the basis of energy methods, precise estimates of a final profile of a weak solution in a neighborhood of the peaking time are established depending on the rate of increase of a global energy of this solution. Key words: quasilinear parabolic equations, peaking regimes, energy solutions.
Harnack inequality and continuity of solutions to quasi-linear degenerate parabolic equations with coeffcients from Kato-type classes
对一类具有可测系数和低阶项的非线性Kato型拟线性退化抛物方程，证明了解的局部有界性和连续性，以及正解的固有Harnack不等式.
In a wide class of the so called Obstacle Problems of parabolic type it is shown how to improve the optimal regularity of the solution and as a consequence how to obtain space-time regularity of the corresponding free boundary.
Center stable manifolds for quasilinear parabolic pde and conditional stability of nonclassical viscous shock waves
出于行波的条件稳定性的研究，我们给准线性抛物偏微分方程的基本$H^2$中心稳定的流形建设，回避显然微妙的正则性问题相结合的精心选择的隐式不动点计划和“阻尼型”$H^s$能量估计的一种熟悉的双曲-抛物和松弛系统的研究。这些方法的一个重要特点是，它们概括的情况下，如双曲-抛物线或松弛的情况下，抛物线型平滑估计是不可用的。作为应用，我们通过对中心稳定流形的逐点稳定性分析，证明了一般拟线性抛物型守恒律方程组的Lax或欠压缩激波的条件稳定性。
Quasilinear parabolic stochastic partial differential equations: existence, uniqueness
本文给出了一种直接的方法来研究拟线性随机偏微分方程强（概率意义下）解和弱（PDE意义下）解的存在唯一性，这类方程既不是单调的，也不是局部单调的.
Global estimates for quasilinear parabolic equations on Reifenberg flat domains and its applications to Riccati type parabolic equations with distributional data
本文证明了拟线性抛物型方程：$$u_t-\operatorname{div}(A(x,t,\nabla u))=\operatorname{div}(F),$$在有界区域$Ω\times (0,T)\subset\mathbb{R}^{N+1}$中，在区域边界和非线性项$A$的极小正则性假设下解的梯度的整体加权Lorentz和Lorentz-Morrey估计.然后得到Riccati型抛物型方程：$$u_t-\operatorname{div}(A(x,t,\nabla u))=|\nabla u|^q+\operatorname{div}(F)+μ,$$解的存在性，其中$q>1$和$μ$是有界Radon测度.
Classical results of second order parabolic quasi-linear equations always require that the nonlinear terms are controlled by a power of the unknown functions and their first derivatives. We improve the previous results. More precisely, in the present article the upper bound of nonlinear term can be extended to a power series.
Global Continua of Positive Equilibria for some Quasilinear Parabolic Equation with a Nonlocal Initial Condition
研究一类具有非线性非局部初始条件的拟线性抛物型方程。该问题作为具有非线性扩散的种群动力学中的平衡方程而出现。利用全局分歧理论证明了正解的无界连续统的存在性。
Quantitative stability for quasilinear parabolic equations
本文研究了准线性抛物型方程在扰动下的稳定性，通过比较论证方法建立了显式收敛速率，并对p-抛物方程的指数扰动和正则化近似提供了定量估计。
On quasilinear parabolic evolution equations in weighted Lp-spaces II
本文将文[17]中关于时间加权L_p-空间中抽象拟线性抛物问题的研究推广到包含奇异低阶项，同时保持较低的初始正则性。结果适用于反应扩散问题，包括麦克斯韦-斯特凡扩散，和几何发展方程一样的表面扩散流或Willmore流。本文的方法也适用于其它抛物型方程组，包括自由边界问题。
Asymptotic solutions of a quasilinear parabolic equation with a small parameter at the higher derivative are constructed near large-gradient and Lagrange singularities of A-type, which represent interest for studying processes of shock waves formation in physical media with a small nonzero viscosity.
Gradient estimates for degenerate quasi-linear parabolic equations
对一类具有可微结构且低阶系数关于Laplacian形式有界的散度型拟线性退化抛物方程，得到了解的梯度的$L^q$ -估计，并证明了对于Kato型的低阶系数，解关于空间变量是Lipschitz连续的.
Quasi linear parabolic pde posed on a network with non linear Neumann boundary condition at vertices
本文研究了有界网络上顶点处满足非线性非动态Neumann边界条件的二阶拟线性抛物型偏微分方程，并证明了其经典解的存在性与唯一性。
Global regularity of weak solutions to quasilinear elliptic and parabolic equations with controlled growth
本文在Lipschitz区域上建立了拟线性散度型椭圆和抛物型方程弱解的整体正则性，并在低阶项上给出了控制增长条件.首项系数属于关于$x$具有小平均振荡的BMO函数类。
Continuous dependence estimates and homogenization of quasi-monotone systems of fully nonlinear second order parabolic equations
本文将\cite{JK1}中证明的连续相关估计推广到完全非线性二阶抛物型方程的拟单调系统。作为这些估计的副产品，我们得到了系统有界解的Hölder估计和消失粘性近似的收敛速率估计。在本文的第二部分中，我们采用类似的技巧来研究完全非线性二阶一致抛物型方程的拟单调系统的周期均匀化。最后，给出了一些算例。
This is the second part of our series of papers on metastability results for parabolic equations with drift. The aim is to present a self-contained study, using partial differential equations methods, of the metastability properties of quasi-linear parabolic equations with a drift and to obtain results similar to those in Freidlin and Koralov [Nonlinear stochastic perturbations of dynamical systems and quasi-linear parabolic PDE's with a small parameter, Probab. Theory Related Fields 147 (2010), ArXiv:0903.0428v2 (2012)].
We present in this note a local in time well-posedness result for the singular $2$-dimensional quasilinear generalized parabolic Anderson model equation $$ \partial_t u - a(u)Δu = g(u)ξ$$ The key idea of our approach is a simple transformation of the equation which allows to treat the problem as a semilinear problem. The analysis is done within the elementary setting of paracontrolled calculus.
Lipschitz bounds for solutions of quasilinear parabolic equations in one space variable
我们根据初始连续模和经过的时间限制了一个空间变量中拟线性抛物型方程解的连续模。特别是，我们描述了这些方程的解的Lipschitz常数可以有界的初始振荡和流逝的时间。
We consider a class of abstract quasilinear parabolic problems with lower--order terms exhibiting a prescribed singular structure. We prove well--posedness and Lipschitz continuity of associated semiflows. Moreover, we investigate global existence of solutions and we extend the generalized principle of linearized stability to settings with initial values in critical spaces. These general results are applied to the surface diffusion flow in various settings.
Asymptotic symmetry for a class of quasi-linear parabolic problems
研究了一类具有变分结构的拟线性椭圆型方程弱正解的对称性。在此基础上，研究了相应的抛物型方程整体解的渐近性态。特别是，如果域是一个球，$ω$ -极限集的元素是非负的径向对称解的平稳问题。
This paper is concerned with a general class of fully nonlinear parabolic equations with monotone nonlocal terms. We investigate the quasiconvexity preserving property of positive, spatially coercive viscosity solutions. We prove that if the initial value is quasiconvex, the viscosity solution to the Cauchy problem stays quasiconvex in space for all time. Our proof can be regarded as a limit version of that for power convexity preservation as the exponent tends to infinity. We also present several concrete examples to show applications of our result.
On quasilinear parabolic evolution equations in weighted $L_p$-spaces
本文发展了加权$L_p$ -空间中拟线性抛物问题的一个几何理论。我们证明了解的存在唯一性以及对初始值的连续依赖性。此外，我们利用拟线性抛物型方程的正则化效应，研究了$\om$ -极限集和解的长时间行为。这些技术被应用到一个自由边界值问题。本文的结果主要是基于（加权）$L_p$ -空间中的极大正则性工具。
In this paper we study a rather wide class of quasilinear parabolic problems with nonlinear boundary condition and nonstandard growth terms. It includes the important case of equations with a $p(t,x)$-Laplacian. By means of the localization method and De Giorgi's iteration technique we derive global a priori bounds for weak solutions of such problems. Our results seem to be new even in the constant exponent case.
We are concerned with nonexistence results for a class of quasilinear parabolic differential problems with a potential in $Ω\times(0,+\infty)$, where $Ω$ is a bounded domain. In particular, we investigate how the behavior of the potential near the boundary of the domain and the power nonlinearity affect the nonexistence of solutions. Particular attention is devoted to the special case of the semilinear parabolic problem, for which we show that the critical rate of growth of the potential near the boundary ensuring nonexistence is sharp.
We consider viscosity solutions to non-homogeneous degenerate and singular parabolic equations of the $p$-Laplacian type and in non-divergence form. We provide local Hölder and Lipschitz estimates for the solutions. In the degenerate case, we prove the Hölder regularity of the gradient. Our study is based on a combination of the method of alternatives and the improvement of flatness estimates.
In this paper, we are interested in obtaining a unified approach for $C^{1,α}$ estimates for weak solutions of quasilinear parabolic equations, the prototype example being \[ u_t - \text{div} (|\nabla u|^{p-2} \nabla u) = 0. \] without having to consider the singular and degenerate cases separately. This is achieved via a new scaling and a delicate adaptation of the covering argument developed by E.~DiBenedetto and A.~Friedman.
Unbounded Supersolutions of Some Quasilinear Parabolic Equations: a Dichotomy
研究了发展p-Laplace方程在慢扩散情形下的无界（粘性）上解.超解分为两个不同的类别，取决于它们是否局部可和到幂p-2。研究了多孔介质方程。
We study the Cauchy problem for fully nonlinear (stochastic) parabolic partial differential equations. We provide both in deterministic and stochastic case the existence of a maximal defined solution for the problem and we provide suitable blow-up criterion. The key idea is the use of the paradifferential operator calculus in order to reduce the fully nonlinear problem into an abstract quasilinear (stochastic) parabolic equation. This allows us to use some recent results on abstract quasilinear (stochastic) evolution equations in Banach spaces. To do so, we analyse the properties of the paradi…
Variational inequalities, formulated on unknown dependent convex sets, are called quasi-variational inequalities (QVI). This paper is concerned with the abstract approach to a class of parabolic QVIs arising in many biochemical/mechanical problems, based on a compactness theorem for parabolic variational inequalities (cf. [9]). The prototype of our model for QVIs of parabolic type is formulated in a reflexive Banach space as the sum of the time-derivative operator under unknown convex constraints and a semimonotone operator, including a feedback system which selects a convex constraint. The ma…
Boundary value problems for some quasilinear parabolic equations under minimal conditions on the coefficients
研究拟线性抛物边值问题，给出保证Sobolev类解存在唯一性的尖锐条件，包括数据的光滑性、相容性及确保极值原理的不等式，证明基于先验估计和参数延拓法。
Selfsimilar solutions in a sector for a quasilinear parabolic equation
研究了一类拟线性抛物型方程在扇形区域内的两点自由边界问题。边界条件被假定为在空间和时间上以一种特殊的方式“自相似”。证明了离散时间自相似的扩展解的存在性、唯一性和渐近稳定性。我们还研究了在离散时刻自相似的收缩解的存在性和唯一性。
We obtain local boundedness of weak solutions of double phase quasilinear parabolic equations of the form \[u_t-\text{div} \left(|\nabla u|^{p-2}\nabla u+a(x,t)|\nabla u|^{q-2}\nabla u\right)=0,\] where, we have imposed the restrictions $\frac{2N}{N+2}<p<\infty$, $0\leq a(x,t)\leq M$ is measurable and $q < p\frac{N+1}{N-1}$.
We consider mixed local and nonlocal quasilinear parabolic equations of $p$-Laplace type and discuss several regularity properties of weak solutions for such equations. More precisely, we establish local boundeness of weak subsolutions, lower semicontinuity of weak supersolutions as well as upper semicontinuity of weak subsolutions. We also discuss the pointwise behavior of the semicontinuous representatives. Our main results are valid for sign changing solutions. Our approach is purely analytic and is based on energy estimates and the De Giorgi theory.
The global existence of weak solutions to a class of quasilinear parabolic equations with nonlinearities depending on first order terms and integrable data in a moving domain is investigated. The class includes the $p$-Laplace equation as a special case. Weak solutions are shown to be global by obtaining appropriate estimates on the gradient as well as a suitable version of Aubin-Lions lemma in moving domains.
On the microscopic spacetime convexity principle of fully nonlinear parabolic equations II: Spacetime quasiconcave solutions
在\cite{CMS}中，Chen-Ma-Salani利用常秩定理和形变方法建立了凸环中热方程解的时空水平集的严格凸性.本文将\cite{CMS}中的常秩定理推广到完全非线性抛物型方程，即建立相应的时空水平集的微观时空凸性原理。事实上，这些结果在一般结构条件下对完全非线性抛物型方程，包括$p$ -Laplacian抛物型方程（$p >1$）和一些中曲率型抛物型方程都成立.
In this paper, we mainly consider the initial boundary problem for a quasilinear parabolic equation \[ u_t-\mathrm{div}\left(|\nabla u|^{p-2}\nabla u\right)=-|u|^{β-1}u+α|u|^{q-2}u, \] where $p>1,β>0$, $q\geq1$ and $α>0$. By using Gagliardo-Nirenberg type inequality, energy method and comparison principle, the phenomena of blowup and extinction are classified completely in the different ranges of reaction exponents.
This paper is concerned with existence and uniqueness of solutions to two kinds of quasilinear parabolic equations. One is described as the form which includes the porous media and fast diffusion type equations. The other is the Cahn--Hilliard type system. The present paper applies Brézis theory directly to both equations and gives existence results for these two equations even if the domain is unbounded. Moreover, an error estimate is also proved via apriori estimates obtained directly.
We present a comprehensive theory of critical spaces for the broad class of quasilinear parabolic evolution equations. The approach is based on maximal $L_p$-regularity in time-weighted function spaces. It is shown that our notion of critical spaces coincides with the concept of scaling invariant spaces in case that the underlying partial differential equation enjoys a scaling invariance. Applications to the vorticity equations for the Navier-Stokes problem, convection-diffusion equations,the Nernst-Planck-Poisson equations in electro-chemistry, chemotaxis equations, the MHD equations, and som…
We extend to the parabolic setting some of the ideas originated with Xiao Zhong's proof in \cite{Zhong} of the Hölder regularity of $p-$harmonic functions in the Heisenberg group $\Hn$. Given a number $p\ge 2$, in this paper we establish the $C^{\infty}$ smoothness of weak solutions of quasilinear pde's in $\Hn$ modelled on the equation $$\p_t u= \sum_{i=1}^{2n} X_i \bigg((1+|\nabla_0 u|^2)^{\frac{p-2}{2}} X_i u\bigg).$$
Simultaneous stable determination of quasilinear terms for parabolic equations
该研究针对抛物方程两类拟线性项的同时恢复反问题，结合线性化、奇异解构造等方法推导了Lipschitz与Hölder稳定性估计，可为数值重构收敛速率分析提供支撑。
We study the possibility of prescribing infinite initial values for solutions of the Evolutionary $p$-Laplace Equation in the fast diffusion case $p>2$. This expository note has been extracted from our previous work. When infinite values are prescribed on the whole initial surface, such solutions can exist only if the domain is a space-time cylinder.
Curvature estimates for the level set of spatial quasiconcave solutions to a class of parabolic equations
证明了方程$u_t=F(\n^2u, \n u, u, t)$解的第第二基本型的常秩定理，并给出了空间凸水平曲面的主曲率的几何下界.
We investigate the issue of uniqueness of the limit flow for a relevant class of quasi-linear parabolic equations defined on the whole space. More precisely, we shall investigate conditions which guarantee that the global solutions decay at infinity uniformly in time and their entire trajectory approaches a single steady state as time goes to infinity. Finally, we obtain a characterization of solutions which blow-up, vanish or converge to a stationary state for initial data of the form $λφ_0$ while $λ>0$ crosses a bifurcation value $λ_0$.
Asymptotic behavior of interface solutions to quasilinear parabolic equations with nonlinear forcing terms
研究了拟线性抛物型方程解在有界区间上的渐近性态。特别是，我们关注的一类特殊的解决方案，称为接口解决方案，表现出亚稳态行为，这意味着他们的收敛到系统的渐近配置是指数缓慢。我们的分析的关键是一个近似的稳定状态的问题的线性化，和减少的动力学的一维运动，描述的缓慢收敛的界面向平衡。
This note is devoted to a small, but essential, extension of Theorem 2.1 of our recent paper [6]. The improvement is explained in Section 1 and proved in Section 2. The importance of the extension is demonstrated in Section 3 with an application to the Navier-Stokes system in critical $L_q$-spaces.
In this paper, we prove existence of \emph{very weak solutions} to nonhomogeneous quasilinear parabolic equations beyond the duality pairing. The main ingredients are a priori esitmates in suitable weighted spaces combined with the compactness argument developed in \cite{bulicek2018well}. In order to obtain the a priori estimates, we make use of the full Calderón-Zygmund machinery developed in the past few years and combine it with some sharp bounds for the subclass of Muckenhoupt weights considered in this paper.
On a Quasilinear Parabolic-Hyperbolic System Arising in MEMS Modeling
本文研究MEMS建模中由拟线性抛物方程和半线性双曲方程组成的耦合系统，将其视为更一般设定的特例并证明了强解的局部适定性，该一般性结果适用于二阶或四阶半线性波动方程的耦合情形。
We prove boundary higher integrability for the (spatial) gradient of \emph{very weak} solutions of quasilinear parabolic equations of the form $$u_t - \text{div}\,\mathcal{A}(x,t, \nabla u)=0 \quad \text{on} \ Ω\times \mathbb{R},$$ where the non-linear structure $\text{div}\,\mathcal{A}(x, t,\nabla u)$ is modelled after the $p$-Laplace operator. To this end, we prove that the gradients satisfy a reverse Hölder inequality near the boundary. In order to do this, we construct a suitable test function which is Lipschitz continuous and preserves the boundary values. \emph{These results are new even…
James Serrin's fundamental contributions to the theory of quasilinear elliptic equations are well-known and widely appreciated. He also made less well-known contributions to the theory of quasilinear parabolic equations which we dicuss in this note. Jurgen Moser gave greatly simplified proofs of the De Giorgi-Nash regularity results for linear divergence structure elliptic and parabolic differential equations using an original iterative technique. Serrin extended Moser's techniques and applied them to the study of divergence structure quasilinear elliptic equations, and in collaboration with A…
Quasilinear parabolic equations with superlinear nonlinearities in critical spaces
本文在临界空间中研究具有超线性非线性的拟线性抛物方程的适定性，利用抛物正则化效应建立半流，并通过大气流动等例子验证结果。
Quasilinear Cauchy-Dirichlet problem for parabolic equations with $VMO_x$ coefficients
研究具有不连续系数的抛物型拟线性方程Cauchy-Dirichlet问题，在适当结构条件下证明了强解的存在性、唯一性及Hölder连续性。
Generalized Young Measure Solutions for a Class of Quasilinear Parabolic Equations with Linear Growth
本文利用广义 Young 测度理论将 Young 测度解推广至具线性增长的拟线性抛物型方程，证明了其解的存在唯一性，并证明了对凸抛物变分积分的梯度流而言该解等价于强解。
Quasilinear elliptic and parabolic Robin problems on Lipschitz domains
本文证明了Lipschitz域上具有Neumann和Robin边界条件的散度型拟线性退化椭圆型问题的解的Hölder连续性。这包括所有$p \in (1,\infty)$的$p$ -拉普拉斯运算符，还包括具有无界系数的运算符。基于椭圆型结果，我们证明了相应的抛物问题在$C(\barΩ)$空间中是适定的，只要系数满足一个温和的单调性条件。更精确地说，我们证明了椭圆算子在$C(\barΩ)$中的实现是m-增生的和稠密定义的。从而生成$C(\barΩ)$上的非线性强连续压缩半群.
In this paper, we discuss the Cauchy problem for a degenerate parabolic hyperbolic equation with a multiplicative noise. We focus on the existence of a solution. Using nondegenerate smooth approximations, Debussche, Hofmanová and Vovelle [8] proved the existence of a kinetic solution. On the other hand, we propose to construct a sequence of approximations by applying a time splitting method and prove that this converges strongly in $L^1$ to a kinetic solution. This method will somewhat give us not only a simpler and more direct argument but an improvement over the existence result.
The Cauchy Problem For Quasi-Linear Parabolic Systems Revisited
本文重新审视了准线性抛物型系统Cauchy问题的局部适定性，探讨了Sobolev和Besov空间中的解的存在性，并在SKT系统中验证了非负强解的存在。
扫码添加微信好友，提出您的宝贵建议 👇
💡 备注请填写：网站反馈
发表机构由 AI 从论文文本抽取，如发现错误，欢迎反馈修正建议。