A Lefschetz fibration on minimal symplectic fillings of a quotient surface singularity

Abstract

In this article, we construct a genus-$0$ or genus-$1$ positive allowable Lefschetz fibration on any minimal symplectic filling of the link of non-cyclic quotient surface singularities. As a byproduct, we also show that any minimal symplectic filling of the link of quotient surface singularities can be obtained from a sequence of rational blowdowns from its minimal resolution.

22 pages, 12 figures. This is a revised version. Title changed. To appear in Mathematische Zeitschrift