In 2022, the European Set Theory Society initiated a series of panel discussions with prominent set theorists that take place online around four 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.

• Sixth European Set Theory Colloquium

The Sixth European Set Theory Colloquium took place at 17:00 central European summer time (CEST) on Wednesday, 10 September 2025 with the panelists:

• Juliette Kennedy, University of Helsinki
• Chris Lambie-Hanson, Institute of Mathematics of the Polish Academy of Sciences
• Philipp Lücke, University of Hamburg
• Farmer Schlutzenberg, Technical University of Vienna
  
  The colloquium was moderated by Sandra Müller. The video is available on the new website of the European Set Theory Society.

• Fifth European Set Theory Colloquium

The Fifth European Set Theory Colloquium took place at 17:00 central European summer time (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 colloquium was moderated by Sandra Müller.

The recording is available at:
https://drive.google.com/file/d/1PKC1-U69vEjLINmXk6szRpPRziNlNehN/view?usp=share_link

Here are screenshots of the participants and the moderator:

Here are screenshots of some of the 64 participants:

• 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
• W. Hugh Woodin, Harvard University
• Saharon Shelah, Hebrew University of Jerusalem and Rutgers University
• Stevo Todorčević, University of Toronto and Centre national de la recherche scientifique, Paris

The recording is available at:
https://drive.google.com/file/d/1deaygPDqXOwG3Olr8kSqxr5kB7rRR_la/view?usp=share_link

Alexander S. Kechris

Alexander S. Kechris’ slides

Saharon Shelah

Saharon Shelah’s slides

Stevo Todorčević

W. Hugh Woodin

W. Hugh Woodin’s slides

The group photos show some of the ~170 participants

Harvey Friedman participating in the discussion

• 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 at:
https://drive.google.com/file/d/1e9kq-trF8-5Y37wKFdV-VhVKmx6ZdlX3/view?usp=share_link

Here are Alan Dow’s, Heike Mildenberger’s and Matteo Viale’s slides:

• 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 at:
  https://drive.google.com/file/d/1XLVDlZR2wk3AxXtqvNGso7M4ZY2vxlMS/view?usp=share_link
  

• 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 at:
https://drive.google.com/file/d/18a5dcxAYzo5LrPCYocf6byuDqxW5_7C9/view?usp=share_link

The group photos show some of the 90 participants.