Given a simple polygon in the plane with two distinguished vertices, s and g, is it possible for two guards to simultaneously walk along the two boundary chains from s to g in suc...
The problem of searching for a walker that wants to be found, when the walker moves toward the helicopter when it can hear it, is an example of a two sided search problem which is ...
We study problems of Clote and Paris, concerning the existence of end extensions of models of n-collection. We continue the study of the notion of ` -fullness', begun by Wilki...