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arXiv · 1403.7489

Invariants of the Brill-Noether curve

Abel Castorena·Alberto López Martín·Montserrat Teixidor i Bigas
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Abstract

For a projective nonsingular curve of genus $g$, the Brill-Noether locus $W^r_d(C)$ parametrizes line bundles of degree $d$ over $C$ with at least $r+1$ sections. When the curve is generic and the Brill-Noether number $\rho(g,r,d)$ equals $1$, one can then talk of the \emph{Brill-Noether curve}. In this paper, we explore the first two invariants of this curve, giving a new way of calculating the genus of this curve and computing its gonality when $C$ has genus 5.

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Abel Castorena, Alberto López Martín, Montserrat Teixidor i Bigas. 2014-03-28. Invariants of the Brill-Noether curve. https://arxiv.org/abs/1403.7489

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