2 papers
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 …
math.CO2025
The Automorphism Group of the Finitary Power Monoid of the Integers under Addition
Salvatore Tringali, Kerou Wen
Endowed with the binary operation of set addition carried over from the integers, the family of all non-empty finite subsets of …