Weierstrass semigroups of a pair of points whose first nongaps are three
\textit{S. J. Kim} [Arch. Math. 62, 73-82 (1994; Zbl 0815.14020)] studied Weierstrass pairs of points on a smooth projective curve. In the paper under review the authors give a complete list of the Weierstrass semigroups at a pair for trigonal curves, first showing that only some semigroup may occur and then for each such semigroup \(\Gamma\) constructing a trigonal curve with a Weierstrass pair with \(\Gamma\) as associated semigroup.
scientific article; zbMATH DE number 1845453