collaborators

5 papers

math.AP2026

Long-time behaviour of a nonlocal stochastic fractional reaction--diffusion equation arising in tumour dynamics

Nikos I. Kavallaris, Subramani Sankar, Manil T. Mohan +2

We introduce a stochastic nonlocal reaction--diffusion model arising in tumour dynamics. Spatial dispersal is described by the fractional Laplacian, accounting for anomalous diffus…

math.DS2026

Data-driven macroscopic dynamics of complex networks using Topological Data Analysis and the Equation-Free Method

Konstantinos Spiliotis, Ole Sönnerborn, Haralampos Hatzikirou +1

In this work, we present a computational framework for exploring and analyzing the macroscopic dynamics of complex agent-based network models by integrating Topological Data Analys…

math.AP2025

A time-fractional Fisher-KPP equation for tumor growth: Analysis and numerical simulation

Marvin Fritz, Nikos I. Kavallaris

We study a time-fractional Fisher-KPP equation involving a Riemann-Liouville fractional derivative acting on the diffusion term, as derived by Angstmann and Henry (Entropy, 22:1035…

math.PR2025

Quenching time and probability estimates for a stochastic reaction-diffusion system with coupled inner singular absorption terms driven by mixed noises

Nikos I. Kavallaris, Christos V. Nikolopoulos, Subramani Sankar

This paper investigates a stochastic parabolic system under Robin boundary conditions, for which the deterministic counterpart exhibits finite quenching. The stochastic system inco…

math.AP2025

The Gierer-Meinhardt system in the entire space with non-local proliferation rates

Marius Ghergu, Nikos I. Kavallaris, Yasuhito Miyamoto

In this work, we present a novel stationary Gierer-Meinhardt system incorporating non-local proliferation rates, defined as follows: $$ \begin{cases} \displaystyle -Δu+λu=\frac{J…