Simply connected space
TOPOLOGICAL SPACE WHICH HAS NO HOLES THROUGH IT
Simply-connected; Multiply connected; Multiply-connected; Doubly connected; Singly connected; Simply connected set; 1-Connected; 1-connected; Simply-connected set; Simply-connected domain; Simply connected domain; Simply connected; Non-simply-connected; Simply Connected; Simply connected topological space
In topology, a topological space is called simply connected (or 1-connected, or 1-simply connected) if it is path-connected and every path between two points can be continuously transformed (intuitively for embedded spaces, staying within the space) into any other such path while preserving the two endpoints in question. The fundamental group of a topological space is an indicator of the failure for the space to be simply connected: a path-connected topological space is simply connected if and only if its fundamental group is trivial.