Invariants of the Brill–Noether curve
Invariants of the Brill–Noether curve
复制标题
布里尔-诺特曲线的不变量
DOI:
10.1515/advgeom-2016-0027
复制
发表时间:
2014
影响因子:
0.5
通讯作者:
Montserrat Teixidor i bigas
中科院分区:
文献类型:
--
作者:
Abel Castorena;Alberto López Martín;Montserrat Teixidor i bigas
Abstract For a projective nonsingular curve of genus g, the Brill–Noether locus Wdr(C)$W^r_d(C)$ parametrizes line bundles of degree d over C with at least r + 1 (linearly independent) sections. When the curve is generic and the Brill–Noether number ρ(g, r, d) equals 1, one can then talk of the Brill–Noether curve. We introduce combinatorial methods that, with help from the theory of limit linear series, allow us to find invariants of Brill–Noether loci. In particular, we explore the first two invariants of the Brill–Noether curve, giving a new way of calculating the genus of this curve and computing its gonality when C has genus 5.