Vol. 8, No. 1, 2018

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Divisor Package for Macaulay2

Karl Schwede and Zhaoning Yang

Vol. 8 (2018), 87–94

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, or generate base point free linear systems, or satisfy numerous other conditions.

divisors, reflexive modules, Macaulay2
Mathematical Subject Classification 2010
Primary: 14C20
Secondary: 13B22
Supplementary material

A Macaulay2 package for handling divisors

Received: 31 October 2014
Revised: 15 July 2018
Accepted: 31 August 2018
Published: 24 September 2018
Karl Schwede
Department of Mathematics
University of Utah
Salt Lake City, UT
United States
Zhaoning Yang