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On The Asymptotic Values of Length Functions In Krull And Finitely Generated commutative Monoids

Published online by Cambridge University Press:  09 April 2009

S. T. Chapman
Affiliation:
Trinity UniversityDepartment of Mathematics 715 Stadium Drive San Antonio, Texas 78212-7200 USA e-mail: [email protected]
J. C. Rosales
Affiliation:
Departamento de Álgebra Universidad de Granada E-18071 Granada Spain e-mail: [email protected]
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Abstract

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Let M be a commutative cancellative atomic monoid. We consider the behaviour of the asymptotic length functions and on M. If M is finitely generated and reduced, then we present an algorithm for the computation of both and where x is a nonidentity element of M. We also explore the values that the functions and can attain when M is a Krull monoid with torsion divisor class group, and extend a well-known result of Zaks and Skula by showing how these values can be used to characterize when M is half-factorial.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2003

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