On Weierstrass semigroup at $m$ points on curves of the type f(y) = g(x)

Abstract

In this work we determine the so-called minimal generating set of the Weierstrass semigroup of certain $m$ points on curves $\mathcal{X}$ with plane model of the type $f(y)=g(x)$ over ${\mathbb{F}}_q$, where $f(T),g(T)\in {\mathbb{F}}_q[T]$. Our results were obtained using the concept of discrepancy, for given points $P$ and $Q$ on $\mathcal{X}$. This concept was introduced by Duursma and Park, in \cite{duursma}, and allows us to make a different and more general approach than that used to certain specific curves studied earlier.