A parameter-dependent model involving nonlinear diffusion for an age-structured population is studied. The parameter measures the intensity of the mortality. A bifurcation approach is used to establish existence of positive equilibrium solutions.
@article{arxiv.1002.1788,
title = {Bifurcation of Positive Equilibria in Nonlinear Structured Population Models with Varying Mortality Rates},
author = {Christoph Walker},
journal= {arXiv preprint arXiv:1002.1788},
year = {2010}
}