English

On a question of Dolgachev

Algebraic Geometry 2018-07-10 v2

Abstract

For each even, positive integer nn, we define a rational self-map on the space of plane curves of degree nn, using classical contravariants. In the case of plane quartics, we show that the degree of this map is 15. This answers a question of Dolgachev on the moduli space of curves of genus 3.

Keywords

Cite

@article{arxiv.1806.02113,
  title  = {On a question of Dolgachev},
  author = {Marco Pacini and Damiano Testa},
  journal= {arXiv preprint arXiv:1806.02113},
  year   = {2018}
}

Comments

15 pages, no figure, to appear in Mathematical Research Letters

R2 v1 2026-06-23T02:20:51.389Z