Listar MAT_Articles por fuente "Semigroup Forum, February 2015"

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    • openAccess   Duality and syzygies for semimodules over numerical semigroups 

      Moyano-Fernández, Julio José; Uliczka, Jan Springer Verlag (2015-02)
      Let Γ=⟨α,β⟩ be a numerical semigroup. In this article we consider the dual Δ∗ of a Γ-semimodule Δ; in particular we deduce a formula that expresses the minimal set of generators of Δ∗ in terms of the generators of Δ. As ...