Stability of Tschirnhausen Bundles

Author:

Coskun Izzet1,Larson Eric2,Vogt Isabel2

Affiliation:

1. Department of Mathematics, Statistics, and CS, University of Illinois at Chicago , Chicago, IL 60607, USA

2. Department of Mathematics, Brown University , Providence RI 02912, USA

Abstract

Abstract Let $\alpha \colon X \to Y$ be a general degree $r$ primitive map of nonsingular, irreducible, projective curves over an algebraically closed field of characteristic zero or larger than $r$. We prove that the Tschirnhausen bundle of $\alpha $ is semistable if $g(Y) \geq 1$ and stable if $g(Y) \geq 2$.

Funder

NSF FRG

NSF

Publisher

Oxford University Press (OUP)

Subject

General Mathematics

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