Nielsen coincidence theory of $(n,m)$-valued pairs of maps

Grzegorz Graff, P. Christopher Staecker, Alan Żeromski

We consider pairs of maps $(f,g)$, where $f$ is an $n$-valued map and $g$ is an $m$-valued map, defined on connected finite polyhedra. A point $x$ such that $f(x)\cap g(x)\neq \emp…