Bing's theorem states that if M ful lls certain conditions, and every one of these in M is contained in the interior of a ball in M, then M is isomorphic to a hypersphere.
Bing's theorem states that if M ful lls certain conditions, and every one of these in M is contained in the interior of a ball in M, then M is isomorphic to a hypersphere. A frame is one of these which is associated with a knot. A sutured manifold is a manifold endowed with a set of these which divide it into positive and negative pieces, and the Schön ies theorem states that the closure of one of the disconnected components of R2 minus one of these is homeomorphic to the unit 2-ball. If these are   simple, then they are named for Jordan. For ten points, identify this kind of curve which has no endpoints and encircles an area.
Bing's theorem states that if M ful lls certain conditions, and every one of these in M is contained in the interior of a ball in M, then M is isomorphic to a hypersphere.
closed curve [accept Jordan curve until  Jordan  is read and prompt afterwards, prompt on curve]