World Logic Day 2026 in Tallinn

hosted by

of Tallinn University of Technology (TUT)

and the Estonian Academy of Sciences


WLD 2026 Logic in Estonia Workshop

Tallinn, Estonian Academy of Sciences, 10 January 2026

This in-person event is meant as a friendly get-together for people in or outside of Estonia who are interested in philosophical or mathematical/computer science logic - an opportunity to learn about current logic research in Estonia on both sides of the field and to celebrate the World Logic Day.

Programme

The workshop will take place in the grand hall of the Estonian Academy of Sciences (Kohtu 6, Tallinn).

Zoom link: This event has already taken place.

All times are Tallinn time (GMT+2).

Talk abstracts, slides

9:45-10:00Welcome coffee
10:00-10:15Opening
10:15-11:15Session 1
Noam Zeilberger (LIX, École Polytechnique): Fibrational perspectives on logic, automata and language theory
11:15-11:30Break
11:30-12:30 Niels Voorneveld (Cybernetica): Multimodal logic for knowledge and communication
Danel Ahman (U. of Tartu): Intuitionistic modal logic and temporal resource management
12:30-13:30Lunch
13:30-14:30Session 2
Juha Kontinen (U. of Helsinki): Descriptive complexity of Boolean and algebraic complexity classes
14:30-15:00Amirouche Moktefi (TUT): Is 'French logic' an oxymoron?
15:00-15:30Coffee break
15:30-16:30Session 3
Alessandro Di Giorgio (TUT): Proofs as programs as diagrams
Chad Nester (U. of Tartu): A general notion of combinatory completeness
16:30-16:45Discussion

Registration

Participation is free, but please register by filling this form.

If you plan to attend in person, please fill the form by Mon 5 Jan. This is necessary to plan catering. Thanks!

Previous WLD events in Estonia

Organizers

Amirouche Moktefi, Tarmo Uustalu, Niccolò Veltri

Sponsors

For the 4th year, we are grateful for the support from the Department of Software Science.

We also acknowledge the generous support of the Estonian Academy of Sciences.

Contact

Get in touch with Amirouche Moktefi (firstname.lastname@taltech.ee), Tarmo Uustalu (firstname@cs.ioc.ee) or Niccoló Veltri (firstname@cs.ioc.ee).


Last updated 13 January 2026