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The work deals with establishing the solvability of a system of integro-differential equations in the situation of the double scale anomalous diffusion. Each equation of such system involves the sum of the two negative Laplace operators…

偏微分方程分析 · 数学 2025-05-23 Vitali Vougalter , Vitaly Volpert

The article is devoted to the solvability of a system of integro-differential equations in the case of the difference of the standard Laplacian and the bi-Laplacian in the diffusion terms. The proof of the existence of solutions is based on…

偏微分方程分析 · 数学 2026-04-28 Vitali Vougalter , Vitaly Volpert

The work deals with the studies of the existence of solutions of an integro-differential equation in the situation of the difference of the standard Laplacian and the bi-Laplacian in the diffusion term. The proof of the existence of…

偏微分方程分析 · 数学 2026-03-10 Vitali Vougalter , Vitaly Volpert

We prove the existence of stationary solutions for some systems of reaction-diffusion type equations with superdiffusion in the corresponding H^2 spaces. Our method is based on the fixed point theorem when the elliptic problems contain…

偏微分方程分析 · 数学 2024-09-17 Vitali Vougalter

In this article, we consider a system of integro-differential equations in L^2(R, R^N), which contains the logarithmic Laplacian in the presence of transport terms. The linear operators associated with the system satisfy the Fredholm…

偏微分方程分析 · 数学 2024-06-13 Yuming Chen , Vitali Vougalter

We prove the existence of solutions for some integro-differential systems containing equations with and without the drift terms in the H^2 spaces by virtue of the fixed point technique when the elliptic equations contain second order…

偏微分方程分析 · 数学 2024-01-24 Messoud Efendiev , Vitali Vougalter

In this paper, we consider an integro-differential equation in L^2(R), which involves the logarithmic Laplacian in the presence of a drift term. The linear operator associated with the problem has the Fredholm property. By using a fixed…

偏微分方程分析 · 数学 2024-04-16 Yuming Chen , Vitali Vougalter

We consider the stationary (time-independent) Navier-Stokes equations in the whole threedimensional space, under the action of a source term and with the fractional Laplacian operator (--$\Delta$) $\alpha$/2 in the diffusion term. In the…

偏微分方程分析 · 数学 2024-05-16 Oscar Jarrín , Gastón Vergara-Hermosilla

An unsteady problem is considered for a space-fractional diffusion equation in a bounded domain. A first-order evolutionary equation containing a fractional power of an elliptic operator of second order is studied for general boundary…

数值分析 · 计算机科学 2014-12-19 Petr N. Vabishchevich

In the article we establish the global well-posedness in W^{1, 2, 2}(R\times R^{+}) of the integro-differential equation in the case of the anomalous diffusion when the one dimensional negative Laplace operator is raised to a fractional…

偏微分方程分析 · 数学 2024-04-09 Messoud Efendiev , Vitali Vougalter

We address the existence in the sense of sequences of solutions for a certain integro-differential type problem involving the logarithmic Laplacian. The argument is based on the fixed point technique when such equation contains the operator…

偏微分方程分析 · 数学 2024-06-25 Vitali Vougalter , Vitaly Volpert

We present an analysis of existence, uniqueness, and smoothness of the solution to a class of fractional ordinary differential equations posed on the whole real line that models a steady state behavior of a certain anomalous diffusion,…

经典分析与常微分方程 · 数学 2018-05-25 V. Ginting , Y. Li

This study handles spatial three-dimensional solution of the nonlinear diffusion equation without particular initial conditions. The functional behavior of the equation and the concentration have been studied in new ways. An auxiliary…

综合数学 · 数学 2020-03-16 Henrik Stenlund

We study nonlinear elliptic equations for operators corresponding to non-stable L\'evy diffusions. We include a sum of fractional Laplacians of different orders. Such operators are infinitesimal generators of non-stable (i.e., non…

偏微分方程分析 · 数学 2015-12-16 Xavier Cabre , Joaquim Serra

We demonstrate the existence in the sense of sequences of solutions for some integro-differential type problems involving the drift term and the square of the Laplace operator, on the whole real line or on a finite interval with periodic…

偏微分方程分析 · 数学 2025-09-16 Vitali Vougalter

In this paper we obtain the existence of a radial solution for some elliptic nonlocal problem with constraints. The problem arises from some reaction-diffusion equation modelling among others system of self-gravitating particles when one…

偏微分方程分析 · 数学 2011-01-11 Robert Stańczy

We consider some reaction-diffusion equations describing systems with the nonlocal consumption of resources and the intraspecific competition. Sharp conditions on the coefficients are obtained to ensure the stability and instability of…

偏微分方程分析 · 数学 2024-09-06 Yuming Chen , Vitali Vougalter

This paper is dedicated to the study of the semilinear fractional diffusion-wave equation. We provide estimates on the families of linear operators related to the problem in the fractional power scale associated with the Laplace operator.…

偏微分方程分析 · 数学 2025-09-09 Bruno de Andrade , Naldisson Santos

Reactio-nonlocal diffusion equations model nonlocal transport and anomalous diffusion by replacing the Laplacian with a fractional power, capturing diffusion mechanisms beyond Brownian motion. We primarily study the semilinear problem \[…

偏微分方程分析 · 数学 2026-01-30 Pu Yuan , Paul A. Zegeling

This paper intends on obtaining the explicit solution of $n$-dimensional anomalous diffusion equation in the infinite domain with non-zero initial condition and vanishing condition at infinity. It is shown that this equation can be derived…

经典分析与常微分方程 · 数学 2020-09-23 Durdimurod Durdiev , Elina Shishkina , Sergei Sitnik
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