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The behaviour of solutions for a non-linear diffusion problem is studied. A subordination principle is applied to obtain the variation of parameters formula in the sense of Volterra equations, which leads to the integral representation of a…

概率论 · 数学 2022-12-21 S. Solís , V. Vergara

We study the existence and multiplicity of periodic weak solutions for a non-local equation involving an odd subcritical nonlinearity which is asymptotically linear at infinity. We investigate such problem by applying the the pseudo-index…

偏微分方程分析 · 数学 2018-09-06 Vincenzo Ambrosio , Giovanni Molica Bisci

We study the non-linear evolution of the curvature perturbations during matter dominated era. We show that regardless of the origin of the primordial perturbation, the Bardeen potential and curvature receive sizable contributions from the…

宇宙学与河外天体物理 · 物理学 2011-09-09 Jinn-Ouk Gong , Jai-chan Hwang , Hyerim Noh

The diffusion system with time-fractional order derivative is of great importance mathematically due to the nonlocal property of the fractional order derivative, which can be applied to model the physical phenomena with memory effects. We…

偏微分方程分析 · 数学 2021-03-24 Mengmeng Zhang , Jijun Liu

The study of blow-up solution of time-fractional heat equations is of significant and wide-ranging interest for its multitude of applications. These types of equations are used to model several real problems in science and engineering. This…

偏微分方程分析 · 数学 2025-09-24 Hind Ghazi Hameed , Burhan Selcuk , Maan A. Rasheed

Global existence for the nonisentropic compressible Euler equations with vacuum boundary for all adiabatic constants $\gamma > 1$ is shown through perturbations around a rich class of background nonisentropic affine motions. The notable…

偏微分方程分析 · 数学 2021-06-03 Calum Rickard , Mahir Hadzic , Juhi Jang

In this paper, we consider functionals based on moments and non-linear entropies which have a linear growth in time in case of source-type so-lutions to the fast diffusion or porous medium equations, that are also known as Barenblatt…

偏微分方程分析 · 数学 2015-01-16 Jean Dolbeault , Giuseppe Toscani

The initial-boundary value problem for the inhomogeneous non-cutoff Boltzmann equation is a challenging open problem. In this paper, we study the stability and long-time dynamics of the Boltzmann equation near a global Maxwellian without…

偏微分方程分析 · 数学 2025-02-28 Dingqun Deng

Investigating the existence, uniqueness, stability, continuous dependence of data among other properties of solutions of fractional differential equations, has been the object of study by an important range of researchers in the scientific…

经典分析与常微分方程 · 数学 2019-09-10 J. Vanterler da C. Sousa , Thabet Abdeljawad , D. S. Oliveira

In this paper, we consider the dual fractional parabolic problem in the right half space. We prove that the positive solutions are strictly increasing in $x_1$ direction without assuming the solutions be bounded. So far as we know, this is…

偏微分方程分析 · 数学 2023-03-21 Wenxiong Chen , Lingwei Ma

This paper deals with the Cauchy problem for the Hardy-H\'{e}non equation (and its fractional analogue). Local well-posedness for initial data in the class of continuous functions with slow decay at infinity is investigated. Small data (in…

偏微分方程分析 · 数学 2021-10-28 Gael Diebou Yomgne

In this work we analyze a class of nonlinear fractional elliptic systems involving Hardy--type potentials and coupled by critical Hardy-Sobolev--type nonlinearities in $\mathbb{R}^N$. Due to the lack of compactness at the critical exponent…

偏微分方程分析 · 数学 2023-06-22 Alejandro Ortega

We study the large time behavior of nonnegative solutions to the Cauchy problem for a fast diffusion equation with critical zero order absorption $$ \partial_{t}u-\Delta u^m+u^q=0 \quad \quad \hbox{in} \ (0,\infty)\times\real^N\, $$ with…

偏微分方程分析 · 数学 2014-09-09 Said Benachour , Razvan Gabriel Iagar , Philippe Laurencot

In this paper we develop a method to solve evolution equations on Gelfand triples with time-fractional derivative based on monotonicity techniques. Applications include deterministic and stochastic quasi-linear partial differential…

偏微分方程分析 · 数学 2018-05-31 Wei Liu , Michael Röckner , José Luís da Silva

Gaussian process is a theoretically appealing model for nonparametric analysis, but its computational cumbersomeness hinders its use in large scale and the existing reduced-rank solutions are usually heuristic. In this work, we propose a…

机器学习 · 统计学 2015-11-25 Leo L. Duan , Xia Wang , Rhonda D. Szczesniak

We investigate the existence of exact solutions in closed form to a fractional version of the nonlinear Boussinesq equation for groundwater flow through an unconfined aquifer. We show this fractional equation appears naturally when the…

偏微分方程分析 · 数学 2023-03-09 A. Ceretani , F. Falcini , R. Garra

We show how the approach of Yosida approximation of the derivative serves to obtain new results for evolution systems. Using this method we obtain multivalued time dependent perturbation results. Additionally, translation invariant…

动力系统 · 数学 2013-12-11 Josef Kreulich

We consider the fractional Schr\"odinger equations with focusing Hartree type nonlinearity. When the energy is negative, we use a Glassey's virial type argument to show the finite time blow-up of solutions.

偏微分方程分析 · 数学 2014-03-13 Yonggeun Cho , Gyeongha Hwang , Soonsik Kwon , Sanghyuk Lee

It is well-known that the transition function of the Ornstein-Uhlenbeck process solves the Fokker-Planck equation. This standard setting has been recently generalized in different directions, for example, by considering the so-called…

概率论 · 数学 2019-03-06 Luisa Beghin

The Cauchy problem of the compressible Oldroyd-B model without damping mechanism in R^n$ with $n\ge2$ is considered. The lack of dissipation in density and stress tensor in the model is compensated by exploiting an intrinsic structure and…

偏微分方程分析 · 数学 2020-03-03 Xiaoping Zhai , Zhi-Min Chen