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  • Homogeneity groups of ends of open 3-manifolds
    Garity, Dennis, 1950- ; Repovš, Dušan, 1954-
    For every finitely generated abelian group ▫$G$▫, we construct an irreducible open 3-manifold ▫$M_{G}$▫ whose end set is homeomorphic to a Cantor set and with end homogeneity group of ▫$M_{G}$▫ ... isomorphic to ▫$G$▫. The end homogeneity group is the group of self-homeomorphisms of the end set that extend to homeomorphisms of the 3-manifold. The techniques involve computing the embedding homogeneity groups of carefully constructed Antoine type Cantor sets made up of rigid pieces. In addition, a generalization of an Antoine Cantor set using infinite chains is needed to construct an example with integer homogeneity group. Results about local genus of points in Cantor sets and about geometric index are also used.
    Source: Pacific journal of mathematics. - ISSN 0030-8730 (Vol. 269, no. 1, 2014, str. 99-112)
    Type of material - article, component part
    Publish date - 2014
    Language - english
    COBISS.SI-ID - 17071961