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Colloquia of the European Set Theory Society
The European Set Theory Society initiated a series of panel discussions with prominent set theorists and mathematicians in 2022 that usually takes place a few times per year. For each event, three or four experts are invited to describe the general area they represent, explain where the area is heading and discuss how it relates to other areas of set theory and mathematics.
Seventh European Set Theory Colloquium
The Seventh European Set Theory Colloquium focused on Condensed Mathematics, Homological Algebra, and Set Theory. Condensed mathematics is a framework recently developed by Dustin Clausen and Peter Scholze to allow for the application of algebraic tools to the study of algebraic objects carrying topologies, and a number of connections between set theory and condensed mathematics have arisen in the last few years. The colloquium explored these connections, potential for future work, and broader interactions between set theory and topics around homological algebra. The colloquium took place at 17:00-19:00 CET on Thursday, 12 February 2026 on zoom with the panelists:
- Dianthe Basak, University of Paris
- Jeffrey Bergfalk, University of Barcelona
- Peter Scholze, University of Bonn and Max-Planck Institute Bonn
There were more than 100 participants.
The recording is available here.
Literature and links:
- Scholze: Condensed mathematics, lecture notes
- Lambie-Hanson: A lightning introduction to homological algebra and condensed mathematics, slides from the colloquium
- Articles connecting set theory and condensed math:
- Articles mentioned by Dianthe Basak:
- Scholze: Geometry and Higher Category Theory, lecture notes, in relation to the question he asks about duals of vector spaces (at about 1:29:25 of the video); of particular relevance is Lecture X in the notes, especially Example 10.10 therein
Some photos:
The colloquium was organised by Chris Lambie-Hanson, Sandra Müller, Philipp Schlicht and Zoltan Vidnyánszky.
Sixth European Set Theory Colloquium
The Sixth European Set Theory Colloquium took place at 17:00-18:30 CEST on Wednesday, 10 September 2025 with the panelists:
- Juliette Kennedy, University of Helsinki
- Chris Lambie-Hanson, Czech Academy of Sciences
- Philipp Lücke, University of Hamburg
- Farmer Schlutzenberg, Technical University of Vienna
The recording is available here
The colloquium was organised by Sandra Müller, Philipp Schlicht and Zoltan Vidnyánszky.
Fifth European Set Theory Colloquium
The Fifth European Set Theory Colloquium took place at 17:00-18:30 CEST on Thursday, 22 May 2025 with the panelists:
- Andrew Marks, University of California, Berkeley
- Grigor Sargsyan, Institute of Mathematics of the Polish Academy of Sciences
- Dima Sinapova, Rutgers University
The recording is available here
The colloquium was organised by Chris Lambie-Hanson, Sandra Müller, Philipp Schlicht and Zoltan Vidnyánszky.
Fourth European Set Theory Colloquium
The Fourth European Set Theory Colloquium took place at 17:00-19:00 CEST on Thursday, 21 September 2023 with the panelists:
- Alexander S. Kechris, California Institute of Technology
- Saharon Shelah, Hebrew University of Jerusalem and Rutgers University
- Stevo Todorčević, University of Toronto and Centre national de la recherche scientifique, Paris
- W. Hugh Woodin, Harvard University
The recording should be made available here soon
Third European Set Theory Colloquium
The third EST colloquium took place at 17:00-19:00 CEST on Thursday, 11 May 2023 with the panelists:
- Alan Dow, University of North Carolina at Charlotte
- Heike Mildenberger, University of Freiburg
- Slawek Solecki, Cornell University
- Matteo Viale, University of Torino
The recording is available here
Second European Set Theory Colloquium
The second EST colloquium took place at 17:00-19:00 CET on Saturday, 14 January 2023 with the panelists:
- Natasha Dobrinen, University of Notre Dame
- Mirna Džamonja, IRIF, CNRS-Université de Paris
- Ilijas Farah, York University, Toronto
- Ralf Schindler, University of Münster
The recording is available here
First European Set Theory Colloquium
The first ESTS colloquium took place at 17:00-19:00 CEST on Thursday, 27 October 2022 with the panelists:
- Michael Hrusak, Universidad Nacional Autónoma de México
- Juliette Kennedy, University of Helsinki
- Menachem Magidor, Hebrew University of Jerusalem
- Justin Tatch Moore, Cornell University
The recording is available here
Some of the 90 participants:
