Divisor package for Macaulay2
Algebraic Geometry
2019-06-25 v1 Commutative Algebra
Abstract
This note describes a Macaulay2 package for handling divisors. Group operations for divisors are included. There are methods for converting divisors to reflexive or invertible sheaves. Additionally, there are methods for checking whether divisors are Cartier, -Cartier, simple normal crossings, generate base point free linear systems, or satisfy numerous other conditions.
Keywords
Cite
@article{arxiv.1809.01566,
title = {Divisor package for Macaulay2},
author = {Karl Schwede and Zhaoning Yang},
journal= {arXiv preprint arXiv:1809.01566},
year = {2019}
}
Comments
7 pages, to appear in the Journal of Software for Algebra and Geometry. The latest version of the package is available at: https://github.com/kschwede/M2/blob/master/M2/Macaulay2/packages/Divisor.m2