Chunjin Wei

Bistability and Noise-Induced Evasion in Tumor-Immune Dynamics with Antigen Accumulation and Immune Escape

Abstract. Tumor-immune interactions are shaped by both antigenic heterogeneity and stochastic perturbations in the tumor microenvironment, yet the mathematical mechanisms underlying immune phase transitions remain poorly understood. We propose a four-compartment dynamical model t...

Bifurcation Analysis on a Diffusive Minimal Model of Plankton Systems with Stage Structure

In this study, we investigate the dynamics of a diffusive minimal plankton model with stage structure. We first establish sufficient conditions for the existence of a unique positive constant steady state. Building on this, we analyze the stability of the equilibrium and examine...