Exceptional Loci on $\bar M_{0,n}$ and Hypergraph Curves
Algebraic Geometry
2008-09-11 v1
Abstract
We give a myriad of examples of extremal divisors, rigid curves, and birational morphisms with unexpected properties for the Grothendieck--Knudsen moduli space of stable rational curves. The basic tool is an isomorphism between and the Brill--Noether locus of a very special reducible curve corresponding to a hypergraph.
Keywords
Cite
@article{arxiv.0809.1699,
title = {Exceptional Loci on $\bar M_{0,n}$ and Hypergraph Curves},
author = {Ana-Maria Castravet and Jenia Tevelev},
journal= {arXiv preprint arXiv:0809.1699},
year = {2008}
}
Comments
39 pages