An exceptional locus in the perfect compactification of $A_g$
Algebraic Geometry
2019-09-10 v2
Abstract
The line bundle on the perfect compactification is nef; we show here that in positive characteristic it is semi-ample and that in all characteristics its exceptional locus is the closure of the locus of abelian varieties with an elliptic factor.
Keywords
Cite
@article{arxiv.1604.05954,
title = {An exceptional locus in the perfect compactification of $A_g$},
author = {N. Shepherd-Barron},
journal= {arXiv preprint arXiv:1604.05954},
year = {2019}
}
Comments
Unnecessary remarks about stack-theoretic Satake compactifications have been removed