Workshop: Geometric Topology II

Wednesday, October 21, 2026

All talks will take place at aula Edificio Central (Faculty of Mathematics) in Room 1.2, 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

Rhuaidi Burke

Julian Haddad

Schedule

11:00 – 12:00

Isacco Nonino

Title: Pseudo-isotopies of topological 4-manifolds

12:00 – 13:00

Breakfast / Coffee break / Discussion

13:00 – 14:00

Julian Haddad

Title: Morse-theoretic methods in convex geometry

14:00 – 15:00

Lunch break

15:00 – 16:00

Francisco Torres de Lizaur

Title: From PDEs to topological invariants

16:00 – 17:00

Coffee / Discussion

17:00 – 18:00

Rhuaidi Burke

Title: PL Recognition After Two S² × S² Stabilisations is NP-Hard

18:00 – 20:30

Beer / Discussion

20:30 – ...

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 and Isacco Nonino.

Support

This workshop is supported by the Institute of Mathematics of the University of Seville (IMUS), by VII Plan Propio de Investigación y Transferencia (VII PPIT-US), and by (PID2024-157173NB-I00) funded by (MCIN/AEI/10.13039/501100011033), by ESF+, and by FEDER, EU.

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