## Differential and Integral Equations

### Well-posedness for a coagulation multiple-fragmentation equation

Eduardo Cepeda

#### Abstract

We consider a coagulation multiple-fragmentation equation, which describes the concentration $c_t(x)$ of particles of mass $x \in (0,\infty)$ at the instant $t \geq 0$ in a model where fragmentation and coalescence phenomena occur. We study the existence and uniqueness of measured-valued solutions to this equation for homogeneous-like kernels of homogeneity parameter $\lambda \in (0,1]$ and bounded fragmentation kernels, although a possibly infinite total fragmentation rate, in particular an infinite number of fragments, is considered. This work relies on the use of a Wasserstein-type distance, which has shown to be particularly well-adapted to coalescence phenomena. It was introduced in previous works on coagulation and coalescence.

#### Article information

Source
Differential Integral Equations, Volume 27, Number 1/2 (2014), 105-136.

Dates
First available in Project Euclid: 12 November 2013