Кога и къде: 12.01.2026 г., понеделник, от 14:00 ч. в зала 578 на ИМИ - БАН Докладчик:  Валдемар Цанов (ИМИ - БАН) Заглавие на доклада: Geometry of Milnor fibrations of equivariant plane curves Резюме: The local knot of an irreducible C*-equivariant complex plane curve singularity is a torus knot, and the Milnor fiber is a Seifert surface for this knot. I will describe an explicit universal cover of the Milnor fiber by the hyperbolic plane, using automorphic forms for triangle groups. The characteristic morphism of the Milnor fibration can also be recovered, and used to construct geometric structures by universal covers on the knot complement in the 3-sphere, as well as on the complement of the singular curve in the complex plane.

Следващата сбирка на Семинара по особености ще се състои в понеделник (27.10) от 14:00 часа в зала 578. Д-р Ерик Паeмуру (ИМИ-БАН) ще изнесе доклад на тема ,, Log canonical thresholds of reduced plane curves". Абстрактът на неговия доклад е приложен по-долу. Speaker:  Erik Paemurru (IMI-BAS) Title: Log canonical thresholds of reduced plane curves Abstract: I will give an overview of normal forms of plane curve singularities and define the log canonical threshold. I will then compute log canonical thresholds of all reduced plane curve singularities of degree at most five and all reduced plane curve singularities of degree d and multiplicity d-1. This is based on the works https://arxiv.org/abs/2404.18238 and https://arxiv.org/abs/2508.21676