Simply Connected 3-Manifolds with a Dense Set of Ends of Specified Genus
arXiv:1706.09264 · doi:10.1007/s00009-017-0907-9
Abstract
We show that for every sequence , where each is either an integer greater than 1 or is , there exists a simply connected open 3-manifold with a countable dense set of ends so that, for every , the genus of end is equal to . In addition, the genus of the ends not in the dense set is shown to be less than or equal to 2. These simply connected 3-manifolds are constructed as the complements of certain Cantor sets in . The methods used require careful analysis of the genera of ends and new techniques for dealing with infinite genus.