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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…

math.AP2024

Stability of solutions of the porous medium equation with growth with respect to the diffusion exponent

Tomasz Dębiec, Piotr Gwiazda, Błażej Miasojedow +1

We consider a macroscopic model for the growth of living tissues incorporating pressure-driven dispersal and pressure-modulated proliferation. Assuming a power-law relation between…