The ninth edition of the Logic, Algebra and Truth Degrees (LATD 2025) conference was held in Siena, Italy, hosted by the Department of Information Engineering, and Mathematics at the University of Siena. Financial support was provided by:
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• National Group for Algebraic and Geometric Structures and Their Applications (GNSAGA—INDAM),
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• Association for Symbolic Logic (ASL),
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• Associazione Italiana di Logica e sue Applicazioni (AILA),
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• The European Union’s Marie Skłdowska-Curie Grant No. 101007627 (MOSAIC project).
The event brought together 76 researchers from algebraic logic and related areas, at all career stages, for 5 days of lectures, presentations, and intensive discussion. Invited plenary talks were given by:
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1. Manuela Busaniche (CONICET, Santa Fe, Argentina)
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2. Manfred Droste (Leipzig University)
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3. Wesley Fussner (Czech Academy of Science, Prague)
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4. Marianna Girlando (University of Amsterdam)
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5. Tomasz Kowalski (Jagiellonian University, Kraków)
A total of 56 contributed talks were presented in parallel sessions.
For program details, abstracts, and registration information, please visit the conference website: https://www.congressi.unisi.it/latd25/.
Carles Noguera
Chair of the Organizing Committee