Now showing items 1-3 of 3

    • Computation of numerical semigroups by means of seeds 

      Bras Amorós, Maria; Fernández González, Julio (2018-09-01)
      Article
      Open Access
      For the elements of a numerical semigroup which are larger than the Frobenius number, we introduce the definition of seed by broadening the notion of generator. This new concept allows us to explore the semigroup tree in ...
    • On the existence of combinatorial configurations 

      Bras Amorós, Maria; Stokes, Klara (Iniciativa Digital Politècnica, 2011)
      Conference report
      Open Access
      A (v, b, r, k) combinatorial configuration can be defined as a connected, (r, k)-biregular bipartite graph with v vertices on one side and b vertices on the other and with no cycle of length 4. Combinatorial configurations ...
    • The right-generators descendant of a numerical semigroup 

      Bras Amorós, Maria; Fernández González, Julio (2020-01-01)
      Article
      Open Access
      For a numerical semigroup, we encode the set of primitive elements that are larger than its Frobenius number and show how to produce in a fast way the corresponding sets for its children in the semigroup tree. This allows ...