Logic List Mailing Archive

CfP: JAF 2026 - 45es Journées sur les Arithmétiques Faibles, 16-18 September 2026, Warsaw (Poland)

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JAF 2026: 45es Journées sur les Arithmétiques Faibles

16-18 September 2026

Warsaw, Poland

https://jaf45warsaw.wfz.uw.edu.pl

jaf45warsaw@uw.edu.pl<mailto:jaf45warsaw@uw.edu.pl>

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FIRST CALL FOR PAPERS


ABOUT


Journées sur les Arithmétiques Faibles – Weak Arithmetics Days – is an annual conference that brings together researchers working on or applying weak arithmetics in different fields and formalisms. The 45th edition will take place on 16⁠–⁠18 September 2026 in Warsaw, Poland. Information about previous editions is available here<https://jaf.lacl.fr/html/issues.html>.


INVITED SPEAKERS


- Ludovic Patey, CNRS
- Neil Thapen, Czech Academy of Sciences
- Albert Visser, Utrecht University
- Patrick Uftring, University of the Bundeswehr Munich

(more to be announced)


SUBMISSION GUIDELINES


We invite submissions of a 1-page abstract, excluding references, prepared for blind-review. Personal details should be provided in a separate file. Abstracts should be sent to: jaf45warsaw@uw.edu.pl<mailto:jaf45warsaw@uw.edu.pl> by 01 June 2026. Notification of acceptance will be given by June 22 2026.

Topics of the conference include (but are not limited to):

·  Proof theory of formal systems of arithmetic

·  Model theory of formal systems of arithmetic

·  Decidability, undecidability, complexity of arithmetical theories

·  Definability in arithmetic structures

·  Second-order arithmetic (including reverse mathematics)

·  Machines, automata and words, related to arithmetic

·  Complexity theory topics in arithmetic

·  Finite model theory, words structures


IMPORTANT DATES


Paper submission: 1 June 2026

Acceptance notification: 22 June 2026

Registration deadline: 31 July 2026

Conference: 16-18 September 2026


SCIENTIFIC COMMITTEE


Ali Enayat • Leszek Kołodziejczyk • Mateusz Łełyk • Bartosz Wcisło


ORGANIZING COMMITTEE


Mateusz Łełyk • Luca Castaldo • Michał Gil Sanchez • Maciej Głowacki • Piotr Gruza • Katarzyna Kowalik • Konstantinos Papafilippou • Bartosz Wcisło • Michał Wrocławski • Matteo Zicchetti


CONTACTS


To get in touch with the organizers please write to: jaf45warsaw@uw.edu.pl<mailto:jaf45warsaw@uw.edu.pl>


FURTHER INFORMATION


On 19 September 2026, there will be a conference in Warsaw to celebrate Cezary Cieśliński’s 60th birthday. Details on the webpage https://cieslinskibc.wfz.uw.edu.pl.
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