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A mathematical programming approach to the computation of the omega invariant of a numerical semigroup


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  • Blanco, Víctor
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    In this paper we present a mathematical programming formulation for the [omega]-invariant of a numerical semigroup for each of its minimal generators which is an useful index in commutative algebra (in particular in factorization theory) to analyze the primality of the elements in the semigroup. The model consists of solving a problem of optimizing a linear function over the efficient set of a multiobjective linear integer program. We offer a methodology to solve this problem and we provide some computational experiments to show the efficiency of the proposed algorithm.

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    Bibliographic Info

    Article provided by Elsevier in its journal European Journal of Operational Research.

    Volume (Year): 215 (2011)
    Issue (Month): 3 (December)
    Pages: 539-550

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    Handle: RePEc:eee:ejores:v:215:y:2011:i:3:p:539-550

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    Keywords: Integer programming Multiobjective optimization Optimization over an efficient set Numerical semigroups Factorization theory;


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    Cited by:
    1. Zhang, Weihua & Reimann, Marc, 2014. "A simple augmented ∊-constraint method for multi-objective mathematical integer programming problems," European Journal of Operational Research, Elsevier, vol. 234(1), pages 15-24.


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