Workshop: Geometric Topology

Thursady, February 19, 2026

All talks will take place at Aula A1.12, Edificio Blanco, Escuela de Ingeniería de Informática, Universidad de Sevilla.

Campus Reina Mercedes (Avda. Reina Mercedes s/n, 41012 Sevilla)

In this one-day workshop, we aim to bring together researchers and students working in geometric topology and related areas. The goal is to foster interactions across different perspectives within low-dimensional topology, geometry, and algebra, and to provide a platform for informal exchange and discussion. The talks are aimed at an audience with a basic background in algebraic topology, differential geometry, and algebra, as typically covered in introductory lecture courses. In particular, the talks will be accessible to bachelor and master students in these fields.

Speakers

Stefan Friedl

Owen Garnier

Cristina Gómez Cirera

Tobias Hirsch

Schedule

10:00 – 11:00

Stefan Friedl

Title: Gordian distance between links in 3-manifolds

11:00 – 12:00

Breakfast / Coffee break

12:00 – 13:00

Cristina Gómez Cirera

Title: Lens space surgeries and the Berge conjecture

13:00 – 14:30

Lunch break

14:30 – 15:30

Owen Garnier

Title: Seifert link groups and their torsion quotients.

15:30 – 16:30

Coffee / Discussion

16:30 – 17:30

Tobias Hirsch

Title: Connected sum decomposition of higher-dimensional knots

17:30 – 20:00

Beer / Discussion

20:00 – ...

Dinner

Registration and Certificates

This is a scientific event. Talks will be given in English and presented at the blackboard, with an emphasis on explaining ideas and fostering discussion. Participation is open to everyone, and no registration or administrative procedures are required. There are no registration fees or associated formalities. No certificates, meals, or other services are provided. The focus of the workshop is on mathematics and scientific exchange.

Organization

This event is organised by Marc Kegel.

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