Rational curves and ruled orders on surfaces
Rings and Algebras
2011-07-01 v1 Algebraic Geometry
Abstract
We study ruled orders. These arise naturally in the Mori program for orders on projective surfaces and morally speaking are orders on a ruled surface ramified on a bisection and possibly some fibres. We describe fibres of a ruled order and show they are in some sense rational. We also determine the Hilbert scheme of rational curves and hence the corresponding non-commutative Mori contraction. This gives strong evidence that ruled orders are examples of the non-commutative ruled surfaces introduced by Van den Bergh.
Cite
@article{arxiv.1106.6086,
title = {Rational curves and ruled orders on surfaces},
author = {Daniel Chan and Kenneth Chan},
journal= {arXiv preprint arXiv:1106.6086},
year = {2011}
}