On Numerical Semigroups with Almost-Maximal Genus
On Numerical Semigroups with Almost-Maximal Genus
A numerical semigroup is a cofinite subset of N0, containing 0, that is closed under addition. Its genus is the number of nonnegative integers that are missing. A numerical set is a similar object, not necessarily closed under addition. If T is a numerical set, then A(T)={n in N0 : …