Friday Fish Seminar | This is the official website for the Friday Fish seminar hosted at Utrecht University. The Friday Fish is a weekly seminar on differential geometry which has been taking place in Utrecht since 2004. At the moment, the seminar deals in general with differential geometry and topology.

Welcome to the website to the Friday Fish seminar at Utrecht University. On this site you can find announcements for upcoming talks, our previous talks, and the reading seminars we are hosting and have hosted.

If you want to add upcoming talks to your calendar, you can use the following iCalandar-link.

Current reading seminar(s)

Seiberg-Witten theory (Fall 2025)

Upcoming Talks

December 19, 2025 | Seiberg-Witten theory (Fall 2025)
Bas Wensink - TBA
Time: 12:30 — Location: HFG 707

Previous Talks

December 5, 2025 | Seiberg-Witten theory (Fall 2025)
Álvaro del Pino Gómez - Seiberg-Witten invariants of Kähler and symplectic manifolds
November 28, 2025 | Seiberg-Witten theory (Fall 2025)
Lucas Dahinden - Transversality, orientability, defining the invariant
Video
November 21, 2025 | Seiberg-Witten theory (Fall 2025)
Douwe Hoekstra - Compactness of the moduli space
VideoNotes
November 14, 2025 | Seiberg-Witten theory (Fall 2025)
Bas Wensink - Elliptic PDE theory on manifolds and the dimension of the Seiberg-Witten moduli space
Video
November 7, 2025
Gaël Meigniez - A full h-principle for foliations by surfaces of higher codimensions
Video