4 problems

Let $E_i$, $i=1,\ldots,n$, denote the single-strain equilibria, and let the reproduction numbers satisfy … The remaining reproduction numbers may be distinct and smaller, as in the…

Let $n=2$, assume $a,b\in(0,1)$ and … Let $f$ be the virus-dynamics map and let … be its unique non-trivial valid fixed point. Local contraction conjecture. The map $f$ is a contra…

Consider a generalized spoke and star graph with $\ell$ levels. Level one consists of one node, the hub; level two consists of $n_1$ spokes connected to the hub; and each node at l…

Let $a,b\in(0,1)$, let $n$ be the graph parameter, and assume … Let Regions emph{II} and emph{IV} denote the regions of the state space described in the paper, and let iterates mea…