1. Katarzyna Gan-Krzywoszynska (edited by): Personal recollections about JYB by Newton da Costa and others.- 2. Jean-Yves Beziau: Logical Autobiography 50.- 3. Marcos Antonio Alves and Itala M. Loffredo D'Ottaviano: A quantitative-informational approach to logical consequence.- 4. Hajnal Andréka and Istvan Németi: Finite-variable logics do not have weak Beth definability property.- 5. Irving Anellis: Peirce's Role in the History of Logic: Lingua Universalis and Calculus Ratiocinator.- 6. Ignacio Angelelli: The Meaning(s) of "is": Normative vs. Naturalistic Views of Language.- 7. Régis Angot-Pélissier: The relation between logic, set theory and topos theory as it is used by Alain Badiou.- 8. Jonas Becker Arenhart and Décio Krause: Potentiality and Contradiction in Quantum Mechanics.- 9. Diderik Batens: Two, many and differently many.- 10. Hilan Bensusan, Alexandre Costa-Leite and Edelcio Gonçalves de Souza: Logics and their galaxies.- 11. Otavio Bueno: Can Identity be relativized?.- 12.Luis Estrada-González: From (paraconsistent) topos logic to Universal (topos) Logic.- 13. Yvon Gauthier: A Note on the Internal Logic of Constructive Mathematics: The Gel'fond-Schneider Theorem in Transcendental Number Theory.- 14. I. Grattan-Guinness: Is logic universal or hierarchical?.- 15. Dany Jaspers: The English Tenses, Blanche and the Logical Kite.- 16. Azriel Laufer and Dov Gabbay: Topological Aspects of Matrix Abduction 1.- 17. Mai Ben Adar Bessos and Dov Gabbay: Topological Aspects of Matrix Abduction 2.- 18. Sérgio Marcelino, Carlos Caleiro and Pedro Baltazar: Deciding theoremhood in fibred logics without shared connectives.- 19. Amirouche Moktefi and Fabien Schang: On rules and refereeing in football.- 20. Alessio Moretti: Arrow - Hexagons.- 21. Till Mossakowski, Mihai Codescu, Fabian Neuhaus, and Oliver Kutz: The Distributed Ontology, Modelling and Specification Language - DOL.- 22. Sergei Odintsov: Belnap constants and Nelson logic.- 23. Hitoshi Omori and Toshiharu Waragai: Negative modalities in the light of paraconsistency.- 24. Olga Pombo: Operativity and Representativity of the Sign in Leibniz.- 25. Henri Prade and Didier Dubois: Being consistent about inconsistency: Toward the rational fusing of inconsistent propositional logic bases.- 26. Giuseppe Primiero: Realist consequence, epistemic inference, computational correctness.- 27. Christian de Ronde: Epistemological and Ontological Paraconsistency in Quantum Mechanics: For and Against Bohrian Philosophy.
