Minimal genus of a multiple and Frobenius number of a quotient of a numerical semigroup

Francesco Strazzanti

Given two numerical semigroups $S$ and $T$ and a positive integer $d$, $S$ is said to be one over $d$ of $T$ if $S=\{s\in \mathbb{N}|ds\in T\}$ and in this case $T$ is cal…