On normal affine semigroups

Authors
Rosales, JC Garcia-Sanchez, PA
Citation
Jc. Rosales et Pa. Garcia-sanchez, On normal affine semigroups, LIN ALG APP, 286(1-3), 1999, pp. 175-186
Citations number
11
Categorie Soggetti
Mathematics
Journal title
LINEAR ALGEBRA AND ITS APPLICATIONS
ISSN journal
00243795 → ACNP
Volume
286
Issue
1-3
Year of publication
1999
Pages
175 - 186
Database
ISI
SICI code
0024-3795(19990101)286:1-3<175:ONAS>2.0.ZU;2-8
Abstract
We give procedures for determining whether a given monoid is an affine semi group and for computing the dual of a semigroup. We also give methods for d eciding whether an affine semigroup is normal and/or full. The algorithms p resented here are based on the computation of the set of minimal nontrivial nonnegative integer solutions of systems of linear diophantine equations. (C) 1999 Elsevier Science Inc. All rights reserved.