Topology of the links of cDV singularities of types $c{A}_n$ for $n>0$ and $c{D}_n$ for $n>4$

Masaharu Ishikawa, Atsuko Katanaga

We show that the second integral homology group of the link of an isolated compound Du Val (cDV, for short) singularity of type $c{A}_n$ is either trivial or a torsion-free abelian g…