REVERSIBILITY FOR SEMIGROUP ACTIONS*
SAN MARTIN,LUIZ A. B.
DO ROCIO,OSVALDO G
Let Q be a topological space and S a semigroup of local homeomorphisms of Q. The purpose of this paper is to generalize the notion of reversibility and to introduce the reversible sets. And furthermore, it is established a relation between these sets and the control sets for S and it is studied reversibility of semigroup actions on fiber bundles