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相关论文: The singular kernel coagulation equation with mult…

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In this article we prove the existence of solutions to the coagulation equation with singular kernels. We use weighted L^1-spaces to deal with the singularities in order to obtain regular solutions. The Smoluchowski kernel is covered by our…

数学物理 · 物理学 2014-01-22 Carlos Cueto Camejo , Robin Gröpler , Gerald Warnecke

We prove uniqueness of measure solutions for a multi-component version of Smoluchowski's coagulation equation. The result is valid for a broad range of coagulation kernels and allows to include a source term. The classical coagulation…

偏微分方程分析 · 数学 2023-06-21 Sebastian Throm

In this article, the uniqueness of weak solutions to the continuous coagulation and multiple fragmentation equation is proved for a large range of unbounded coagulation and multiple fragmentation kernels. The multiple fragmentation kernels…

偏微分方程分析 · 数学 2013-03-26 Ankik Kumar Giri

Sufficient conditions are given for existence and uniqueness in Smoluchowski's coagulation equation, for a wide class of coagulation kernels and initial mass distributions. An example of non-uniqueness is constructed. The stochastic…

概率论 · 数学 2007-05-23 James R. Norris

In this article, we investigate the existence and uniqueness of weak solutions to the continuous coagulation equation with collisional breakage for a class of unbounded collision kernels and distribution function. The collision kernels and…

偏微分方程分析 · 数学 2018-06-12 Prasanta Kumar Barik , Ankik Kumar Giri

In this work, we consider self-similar profiles for Smoluchowski's coagulation equation for kernels which are possibly unbounded perturbations of the constant one. For this model, we show that the self-similar solutions for the perturbed…

偏微分方程分析 · 数学 2019-02-27 Sebastian Throm

Global weak solutions to the continuous Smoluchowski coagulation equation (SCE) are constructed for coagulation kernels featuring an algebraic singularity for small volumes and growing linearly for large volumes, thereby extending previous…

偏微分方程分析 · 数学 2018-04-04 Prasanta Kumar Barik , Ankik Kumar Giri , Philippe Laurençot

Global solutions to the multicomponent Smoluchowski coagulation equation are constructed for measure-valued initial data with minimal assumptions on the moments. The framework is based on an abstract formulation of the Arzel\`a-Ascoli…

偏微分方程分析 · 数学 2025-04-15 Marina A. Ferreira , Sakari Pirnes

This article is devoted to a generalized version of Smoluchowski's coagulation equation. This model describes the time evolution of a system of aggregating particles under the effect of external input and output particles. We show that for…

偏微分方程分析 · 数学 2023-06-16 Prasanta Kumar Barik , Asha K. Dond , Rakesh Kumar

The existence of weak solutions to the continuous coagulation equation with multiple fragmentation is shown for a class of unbounded coagulation and fragmentation kernels, the fragmentation kernel having possibly a singularity at the…

偏微分方程分析 · 数学 2011-01-24 Ankik Kumar Giri , Philippe Laurencot , Gerald Warnecke

We consider self-similar solutions to Smoluchowski's coagulation equation for kernels $K=K(x,y)$ that are homogeneous of degree zero and close to constant in the sense that \[ -\eps \leq K(x,y)-2 \leq \eps…

偏微分方程分析 · 数学 2015-06-17 B. Niethammer , J. J. L. Velázquez

In this article, the existence of mass-conserving solutions is investigated to the continuous coagulation and collisional breakage equation with singular coagulation kernels. Here, the probability distribution function attains singularity…

偏微分方程分析 · 数学 2019-11-04 Prasanta Kumar Barik , Ankik Kumar Giri , Rajesh Kumar

We show the existence of self-similar solutions with fat tails for Smoluchowski's coagulation equation for homogeneous kernels satisfying $C_1 \left(x^{-a}y^{b}+x^{b}y^{-a}\right)\leq K\left(x,y\right)\leq…

偏微分方程分析 · 数学 2014-11-07 Barbara Niethammer , Sebastian Throm , Juan J. L. Velázquez

In this article we correct the proof of a uniqueness result for self-similar solutions to Smoluchowski's coagulation equation for kernels $K=K(x,y)$ that are homogeneous of degree zero and close to constant in the sense that…

偏微分方程分析 · 数学 2017-06-28 Barbara Niethammer , Sebastian Throm , Juan J. L. Velázquez

An existence result on weak solutions to the continuous coagulation equation with collision-induced multiple fragmentation is established for certain classes of unbounded coagulation, collision and breakup kernels. In this model, a pair of…

偏微分方程分析 · 数学 2018-02-27 Prasanta Kumar Barik , Ankik Kumar Giri

Uniqueness of mass-conserving self-similar solutions to Smoluchowski's coagulation equation is shown when the coagulation kernel $K$ is given by $K(x,x\_*)=2(x x\_*)^{-\alpha}$, $(x,x\_*)\in (0,\infty)^2$, for some $\alpha>0$.

偏微分方程分析 · 数学 2018-04-18 Philippe Laurençot

The multicomponent coagulation equation is a generalisation of the Smoluchowski coagulation equation in which size of a particle is described by a vector. As with the original Smoluchowski equation, the multicomponent coagulation equation…

数学物理 · 物理学 2024-01-24 Jochem Hoogendijk , Ivan Kryven , Camillo Schenone

The present paper deals with the existence and uniqueness of global classical solutions to the continuous coagulation and nonlinear multiple fragmentation equations for large classes of unbounded coagulation, collision and breakup kernels.…

偏微分方程分析 · 数学 2018-02-27 Prasanta Kumar Barik , Ankik Kumar Giri

We consider mass-conserving self-similar solutions of Smoluchowski's coagulation equation with multiplicative kernel of homogeneity $2l\lambda \in (0,1)$. We establish rigorously that such solutions exhibit a singular behavior of the form…

偏微分方程分析 · 数学 2011-02-14 Barbara Niethammer , Juan J. L. Velazquez

We consider Smoluchowski's coagulation equation with a kernel of the form $K = 2 + \epsilon W$, where $W$ is a bounded kernel of homogeneity zero. For small $\epsilon$, we prove that solutions approach a universal, unique self-similar…

偏微分方程分析 · 数学 2019-10-18 José A. Cañizo , Sebastian Throm
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