Journal
Journal of Applied Non-Classical Logics (https://www.tandfonline.com/journals/tncl20)
Guest editors
Sara Ayhan (Tohoku University) and Hitoshi Omori (Tohoku University)
Description
Modern connexive logic started in the 1960s with seminal papers by Richard B. Angell and Storrs McCall. Connexive logics are orthogonal to classical logic insofar as they validate certain non-theorems of classical logic, namely (in Polish notation)
Aristotle's Theses: NCNpp, NCpNp
Boethius' Theses: CCpqNCpNq, CCpNqNCpq
Systems of connexive logic have been motivated by considerations on a content connection between the antecedent and succedent of valid implications and by applications that range from Aristotle's syllogistic to Categorial Grammar and the study of causal implications. Surveys of connexive logic can be found in:
S. McCall, "A History of Connexivity", in D.M. Gabbay et al. (eds.), Handbook of the History of Logic. Volume 11. Logic: A History of its Central Concepts, Amsterdam, Elsevier, 2012, pp. 415-449.
H. Wansing, "Connexive logic", in E. N. Zalta (ed.), The Stanford Encyclopedia of Philosophy.
This special issue is based on the 10th Workshop on Connexive Logics that was held in November 2025 at Tohoku University in Sendai, Japan. However, submissions are not limited to participants of the workshop, but any papers related to connexive logics are welcome!
Topics of interest include (but are not limited to) the following:
Philosophical considerations of the notion of connexivity;
Arguments for or against connexive logics;
Examinations of systems of connexive logics;
Non-explosiveness of logical consequence;
Empirical studies on the scope of connexivity.
Submission details
When submitting, please make sure to indicate that this is a submission to the special issue on connexive logic. Submissions will be subject to the usual review process of the Journal of Applied Non-Classical Logics and are to be made via the submission site to be found here: https://www.tandfonline.com/journals/tncl20
Submission Deadline: September 30, 2026.
For further information, please contact guest editors at sara.ayhan.c7[at]tohoku[dot]ac[dot]jp or hitoshiomori[at]gmail[dot]com.
The XI Workshop on Connexive Logic will be held on 18-19 February, 2027 at the University of Cagliari, Italy. Previous editions of the workshop were held in Istanbul, Raesfeld Castle, Kyoto, Bochum, Mexico City, Turin, Lodz, and Sendai. Its main goal is to foster collaboration between researchers in the area of connexive logics, and to promote communication and cooperation with members of neighbouring fields.
Call for abstracts
We invite contributions on any relevant aspects of connexive logics, in particular:
Philosophical considerations of the notion of connexivity;
Arguments for or against connexive logics;
Systems of connexive logics;
Non-explosiveness of logical consequence;
Empirical studies on the scope of connexivity;
Proof theory of connexive logics;
Algebraic aspects of connexive logics;
Connexivity and metainferences;
Relations with other logics (e.g., modal, quantum, relevant, non-reflexive, non-transitive logics).
Abstracts of contributed talks (1-2 pages, any format) should be sent to paoli[at]unica[dot]it.
Important dates
Submission deadline: 1 October 2026
Notification: 15 November 2026
Conference: 18-19 February 2027
***No conference fee will be charged.***
Invited Speakers
Marko Malink (New York University)
Sara Negri (University of Genoa)
Hitoshi Omori (Tohoku University)
Mariela Rubin (University of Buenos Aires)
Scientific Committee
Sara Ayhan (Tohoku University)
Andrea Iacona (University of Turin)
Mateusz Klonowski (Nicolaus Copernicus University, Torun)
Edwin Mares (Victoria University of Wellington)
Francesco Paoli (University of Cagliari)
Heinrich Wansing (Ruhr University Bochum, and Tohoku University)
Organizing Committee
Roberto Giuntini
Stefano Bonzio
Alessandro Ciurnelli
Ludovico Fusco
Francesco Paoli
Filippo Rasera
Giuseppe Sergioli
Gandolfo Vergottini
Nicolò Zamperlin
Giuseppe Zecchini