Value semigroups and good semigroups

with applications to curve singularities and one-dimensional rings

Catania 17-19 June, 2026

A non-exaustive list of topics included in the workshop is:

• numerical semigroups;
• monomial curves;
• value semigroups and good subsemigroups of \(\mathbb N^d\);
• algebroid branches;
• algebroid curves;
• one-dimensional analytically unramified local rings;
• semigroup of curves with one place at infinity.

There will be up to 20 talks.

Registration

There are no registration fee, but registration is mandatory to participate. Please, use this link to register or propose a talk.

Deadline for registration and talk proposals: 15 March 2026.

Funding

This workshop is funded by:

• Dipartimento di Matematica e Informatica - Università degli studi di Catania
• Progetto PRIN 2022 DD n. 104/2022 e DD n. 1401/2024 del MUR
  Titolo progetto: Unirationality, Hilbert schemes, and singularities.
  Codice progetto: 2022K48YYP
• Progetto UNICT - PIACERI 2024 “ACIVA”