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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…

Analysis of PDEs · Mathematics 2018-06-12 Prasanta Kumar Barik , Ankik Kumar Giri

Existence and uniqueness of weak solutions to the collision-induced breakage and coag-ulation equation are shown when coagulation is the dominant mechanism for small volumes. The collision kernel may feature a stronger singularity for small…

Analysis of PDEs · Mathematics 2021-10-06 Ankik Kumar Giri , Philippe Laurençot

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…

Analysis of PDEs · Mathematics 2019-11-04 Prasanta Kumar Barik , Ankik Kumar Giri , Rajesh Kumar

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…

Analysis of PDEs · Mathematics 2018-02-27 Prasanta Kumar Barik , Ankik Kumar Giri

Existence and uniqueness of mass-conserving classical solutions to the continuous coagulation equation with collisional breakage are investigated for an unbounded class of collision kernels and a particular case of the distribution…

Analysis of PDEs · Mathematics 2018-08-23 Prasanta Kumar Barik , Ankik Kumar Giri

A mathematical model for the discrete nonlinear fragmentation (collision-induced breakage) equation with diffusion is studied. The existence of global weak solutions is established in arbitrary spatial dimensions without assuming a strictly…

Analysis of PDEs · Mathematics 2026-03-12 Saumyajit Das , Ram Gopal Jaiswal

A mathematical model for collision-induced breakage is considered. Existence of weak solutions to the continuous nonlinear collision-induced breakage equation is shown for a large class of unbounded collision kernels and daughter…

Analysis of PDEs · Mathematics 2021-10-05 Ankik Kumar Giri , Philippe Laurençot

In this paper we study the continuous coagulation and multiple fragmentation equation for the mean-field description of a system of particles taking into account the combined effect of the coagulation and the fragmentation processes in…

Analysis of PDEs · Mathematics 2018-11-16 Prasanta Kumar Barik

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…

Analysis of PDEs · Mathematics 2011-01-24 Ankik Kumar Giri , Philippe Laurencot , Gerald Warnecke

In this work, we establish the existence of mass-conserving weak solutions to a nonlinear collision-induced breakage equation in which binary collisions may trigger particle breakup. The result is proved for a class of product-type…

Analysis of PDEs · Mathematics 2026-05-29 Mashkoor Ali

In this article, the existence of global classical solutions to the discrete coagulation equations with collisional breakage is established for collisional kernel having linear growth whereas the uniqueness is shown under additional…

Analysis of PDEs · Mathematics 2022-08-16 Mashkoor Ali , Ankik Kumar Giri

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.…

Analysis of PDEs · Mathematics 2018-02-27 Prasanta Kumar Barik , Ankik Kumar Giri

Existence of mass-conserving weak solutions to the coagulation-fragmentation equation is established when the fragmentation mechanism produces an infinite number of fragments after splitting. The coagulation kernel is assumed to increase at…

Analysis of PDEs · Mathematics 2018-04-25 Philippe Laurençot

We prove the existence of weak solutions for distribution-dependent stochastic Volterra equations under linear growth and continuity conditions on the coefficients and mild regularity assumptions on the kernels, including singular kernels.…

Probability · Mathematics 2026-04-28 Martin Bergerhausen , David J. Prömel

We establish an existence result for weak solutions to an aggregation-diffusion-reaction equation with a constraint, arising in the modelling of multiple sclerosis. The model is derived from a general chemotaxis-type framework and describes…

Analysis of PDEs · Mathematics 2026-01-28 S. Fagioli , M. Kamath Katapady

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…

Analysis of PDEs · Mathematics 2023-06-16 Prasanta Kumar Barik , Asha K. Dond , Rakesh Kumar

A mathematical model for the continuous nonlinear fragmentation equation is considered in the presence of mass transfer. In this paper, we demonstrate the existence of mass-conserving weak solutions to the nonlinear fragmentation equation…

Analysis of PDEs · Mathematics 2025-04-02 Ram Gopal Jaiswal , Ankik Kumar Giri

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…

Analysis of PDEs · Mathematics 2013-03-26 Ankik Kumar Giri

The discrete collisional breakage equation, which captures the dynamics of cluster growth when clusters encounter binary collisions with possible matter transfer, is discussed in this article. The existence of global mass-conserving…

Classical Analysis and ODEs · Mathematics 2023-07-26 Mashkoor Ali , Ankik Kumar Giri , Philippe Laurençot

Global existence of mild solutions to the discrete collisional breakage equations is established for a broad class of collision kernels, without imposing any growth assumptions. In addition, classical solutions are constructed, and…

Classical Analysis and ODEs · Mathematics 2025-07-10 Mashkoor Ali , Philippe Laurençot
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