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math.NT2026
On the automorphisms of numerical power monoids
Anwita Bhowmik, Salvatore Tringali
Let be a numerical monoid, that is, a cofinite submonoid of (the non-negative integers under addition). Denote by the monoid obtained…
math.NT2026
On the automorphisms of the power semigroups of a numerical semigroup
Salvatore Tringali, Kerou Wen
If is a numerical semigroup (that is, a cofinite subset of the non-negative integers closed under addition), then the non-empty subsets of form a semigroup …