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IntegralClosure

Description

This package computes the integral closure of a ring via the algorithm in Theo De Jong's paper, An Algorithm for Computing the Integral Closure, J. Symbolic Computation, (1998) 26, 273-277, for a ring in any characteristic. It also includes functions that uses the algorithm of Anurag Singh and Irena Swanson given in arXiv:0901.0871 for rings in positive characteristic p. The fractions that generate the integral closure over R are obtained with the command ICfractions R if you use De Jong's algorithm via integralClosure R and the output of Singh and Swanson's algorithm is already these fractions.

Author

Version

This documentation describes version 0.9 of IntegralClosure.

Source code

The source code is in the file IntegralClosure.m2.

Exports