19 citations · 69 across the 16 of their papers we have counts for
4 papers · 1 filter
Supersymmetric gaps of a numerical semigroup with two generators
Patricio Almirón, Julio José Moyano-Fernández
In this paper we introduce the new concepts of supersymmetric and self-symmetric gaps of a numerical semigroup with two generators. Those concepts are based on certain symmetries o…
On the score sheets of a round-robin football tournament
Bogdan Ichim, Julio José Moyano-Fernández
The set of (ordered) score sheets of a round-robin football tournament played between teams together with the pointwise addition has the structure of an affine monoid. In this…
Duality and syzygies for semimodules over numerical semigroups
Julio José Moyano-Fernández, Jan Uliczka
Let be a numerical semigroup. In this article we consider the dual of a -semimodule ; in particular we deduce a formula that expresses the minim…
Lattice paths with given number of turns and semimodules over numerical semigroups
Julio José Moyano-Fernández, Jan Uliczka
Let Γ=<α, β> be a numerical semigroup. In this article we consider several relations between the so-called Γ-semimodules and lattice paths from (0,α) to (β,0): we investigate isomo…