CFP: Trends in Logic XXII

Submission deadline: July 18, 2022

Conference date(s):
July 18, 2022 - July 20, 2022

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Conference Venue:

Department of Pedagogy, Psychology and Philosophy, University of Cagliari
Cagliari, Italy


Call for Papers: Trends in Logic XXII

18–20 July 2022

Cagliari, Italy

The 22nd Trends in Logic workshop, entitled "Strong & Weak Kleene Logics", will take place at the University of Cagliari (Cagliari, Italy) from 18–20 July 2022. It is organized by the ALOPHIS research group of the Department of Pedagogy, Psychology and Philosophy.


While the strong three-valued logic of Kleene and the Logic of Paradox have long held a prominent place in the landscape of non-classical logics, the last decade has seen a resurgence of interest in related logics, including the Paraconsistent Weak Kleene logic (PWK) and Strict-Tolerant logics. These logics put their own twist on the idea of three truth values and accordingly they have varied philosophical readings and applications. Among other things, they represent logics of partial information, logics of nonsense, and logics of variable inclusion. Algebraic and proof-theoretic methods have successfully been brought to bear on these logics, but much remains to be explored. The aim of the workshop is to bring together researchers working on these various facets of logics related to the strong and weak Kleene systems, be they algebraic, proof-theoretic, or philosophical.

The workshop will be held in a hybrid format, with in-person as well as online sessions. In case conditions do not allow for sessions to be held in person, the workshop will move to a fully online format.

The workshop will be followed by another event on neighbouring topics, the second installment of Workshop on Relating Logics from July 22--23. 


Eduardo Barrio (University of Buenos Aires & CONICET)

Massimiliano Carrara (University of Padua)

Pablo Cobreros (University of Navarra)

Paul Egré (Institut Jean-Nicod)

Peter Jipsen (Chapman University)

Tommaso Moraschini (University of Barcelona)

Graham Priest (University of Melbourne & CUNY)

Anna Romanowska (Warsaw University of Technology)


Jacek Malinowski (Chair)

Walter Carnielli

Roberto Giuntini

Daniele Mundici

Yde Venema

Heinrich Wansing


Stefano Bonzio

Davide Fazio

Antonio Ledda

Francesco Paoli

Michele Pra Baldi

Adam Prenosil

Gavin St. John

Gandolfo Vergottini

Nicolò Zamperlin


The topics of the workshop include, but are not limited to, the following:

•Proof theory and algebraic semantics for:

--Strong Kleene logic

--The Logic of Paradox LP

--Bochvar's logic

--Paraconsistent Weak Kleene logic PWK

•Kleene lattices and their expansions (e.g., MV-algebras)

•Płonka sums and regular varieties

•Left & right variable inclusion logics

•Non-Tarskian relatives of Kleene logics (e.g., Strict-Tolerant logic, metainferential logics)

•Philosophical applications (e.g., truth theory, partial information, analytic entailment, logic of significance/nonsense, etc.)

•CS applications (e.g., belief revision, paraconsistent database update, partial information, etc.)

Submissions of extended abstracts (up to 2 pages, not counting the bibliography). Abstracts should be sent via email to [email protected] Please write "[Abstract]" in the email subject. 

Full versions of selected papers will be published in a special issue of Studia Logica after an open call for papers.


Deadline for submission: Friday, February 4, 2022

Notification of acceptance: Friday, April 15, 2022



Please direct all inquiries by email to: [email protected]

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