Vol. 3, No. 3, 2010

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Numerical semigroups from open intervals

Vadim Ponomarenko and Ryan Rosenbaum

Vol. 3 (2010), No. 3, 333–340
Abstract

We consider numerical semigroups I, for intervals I. We compute the Frobenius number and multiplicity of such semigroups, and show that we may freely restrict I to be open, closed, or half-open, as we prefer.

Keywords
numerical semigroup, modular numerical semigroup
Mathematical Subject Classification 2000
Primary: 20M10, 20M14
Milestones
Received: 30 June 2010
Revised: 29 September 2010
Accepted: 29 September 2010
Published: 16 October 2010

Proposed: Scott Chapman
Communicated by Scott Chapman
Authors
Vadim Ponomarenko
Department of Mathematics and Statistics
San Diego State University
5500 Campanile Dr.
San Diego, CA 92182-7720
United States
http://www-rohan.sdsu.edu/~vadim/
Ryan Rosenbaum
San Diego State University
San Diego, CA 92182-7720
United States