Braid Group techniques in Complex Geometry V: The fundamental group of the complement of a Veronese generic projection

Boris Moishezon, M. Teicher

Research output: Contribution to journalArticlepeer-review

Abstract

omputation of the fundamental group of the complement in the complex plane of the branch curve S , of a generic projection of the Veronese surface to the plane is presented. This paper is a continuation of our previous papers: Braid Group Technique I - IV. In I and II we developed algorithms to compute braid monodromy of a brunch curve, provided there exist a degeneration of the surface to union of planes in a configuration where the associated branch curve is partial to a line arrangement dual to generic. In III we constructed a degeneration of the Veronese surface of order 3 to union of planes with the desired property and in IV we used I -III to compute the braid monodromy of the associated branch curve. Here we use the Van-Kampen method to compute the fundamental group of the complement from a braid monodromy factorization and some extra properties of the factorization , namely invariant properties, also proven in IV. The group is presented using a certain quotient of the Braid group defined by transversal half-twists.
Original languageAmerican English
Pages (from-to)1-20
JournalCommunications in Analysis and Geometry
Volume4
Issue number1
StatePublished - 1995

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