Mathematics – Dynamical Systems
Scientific paper
2011-11-02
Mathematics
Dynamical Systems
Version 1.1. 25 pages, 9 figures, fixed minor typos
Scientific paper
The field of epidemiology has presented fascinating and relevant questions for mathematicians, primarily concerning the spread of viruses in a community. The importance of this research has greatly increased over time as its applications have expanded to also include studies of electronic and social networks and the spread of information and ideas. We study virus propagation on a non-linear hub and spoke graph (which models well many airline networks). We determine the long-term behavior as a function of the cure and infection rates, as well as the number of spokes n. For each n we prove the existence of a critical threshold relating the two rates. Below this threshold, the virus always dies out; above this threshold, all non-trivial initial conditions iterate to a unique non-trivial steady state. We end with some generalizations to other networks.
Becker Thealexa
Greaves-Tunnell Alexander
Kontorovich Leonid Aryeh
Miller Steven J.
Ravikumar Pradeep
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