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On sections of hyperelliptic Lefschetz fibrations

On sections of hyperelliptic Lefschetz fibrations

We construct a relation among right-handed Dehn twists in the mapping class group of a compact oriented surface of genus g with 4g C 4 boundary components.This relation gives an explicit topological description of 4g C 4 disjoint .1/-sections of a hyperelliptic Lefschetz fibration of genus g on the manifold …