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math.AP2026

A note on application of mean-field limit to non-exchangeable non-conservative systems

Piotr Gwiazda, Katarzyna Ryszewska

In this paper we apply the newly developed theory of extended graphons to a certain class of non-exchangeable, non-conservative problems. We establish the mean-field limit by provi…

math.AP2026

Asynchronous exponential growth for structured population models in measure space

Christian Düll, József Z. Farkas, Piotr Gwiazda +1

This paper studies the asymptotic behaviour of a structured population model on the space of nonnegative Radon measures. Such formulations naturally arise when solutions develop co…

math.AP2025

Stochastic parabolic equations in Musielak-Orlicz spaces with discontinuous in time N-function

Piotr Gwiazda, Jakub Woźnicki, Aneta Wróblewska-Kamińska +1

We consider a stochastic parabolic partial differential equation with Dirichlet boundary conditions, multiplicative stochastic noise, and a monotone parabolic operator A. The growt…

math.AP2025

Lipschitz stability for Bayesian inference in porous medium tissue growth models

Tomasz Dębiec, Piotr Gwiazda, Błażej Miasojedow +3

We consider a macroscopic model for the dynamics of living tissues incorporating pressure-driven dispersal and pressure-modulated proliferation. Given a power-law constitutive rela…

math.AP2025

Rigorous derivation of magneto-Oberbeck-Boussinesq approximation with non-local temperature term

Piotr Gwiazda, Florian Oschmann, Aneta Wróblewska-Kamińska

We consider a general compressible, viscous, heat and magnetically conducting fluid described by the compressible Navier-Stokes-Fourier system coupled with induction equation. In p…