Castelnuovo-Mumford regularity of projective monomial curves via sumsets

Philippe Gimenez, Mario González-Sánchez

Let $A=\{a_0,\dots ,a_{n-1}\}$ be a finite set of $n\ge 4$ non-negative relatively prime integers such that $0=a_0<a_1<\cdots <a_{n-1}=d$. The $s$-fold sumset of $A$ is the set $sA…