2020

J.-Y.Beziau, “Metalogic, Schopenhauer and Universal Logic” in J.Lemanski (ed), Language, Logic, and Mathematics in Schopenhauer, Birkhäuser, Basel, 2020.

N.C.A. da Costa and J.-Y.Beziau, “Is God Paraconsistent?” in Beyond Faith and Rationality Essays on Logic, Religion and Philosophy,, Springer International Publishing, Cham, 2020.

2019

J.-Y.Beziau "The Future of Logic", Archives of Philosophy, vol.51 (2019), pp.367-374.

J.-Y.Beziau, "Cats that are not cats", in Dov Gabbay, Lorenzo Magnani, Woosuk Park, and Ahti Veikko Pietarinen (eds), Natural Arguments - A Tribute to John Woods, College Publications, London, 2019, pp.49-71.

J.-Y.Beziau, "An unexpected feature of classical propositional logic in the Tractatus", in G.Mras, P.Weingartner and B.Ritter (eds), Philosophy of Logic and Mathematics: Proceedings of the 41st International Ludwig Wittgenstein Symposium, De Gruyter, Berlin, Munich, Boston, 2019.

J.-Y.Beziau, "The Arbitrariness of the Sign in Question - 100 years or Arbitrariness", in The arbitrariness of the sign in question - Proceedings of a CLG100 Workshop, Geneva, January 10-12, 2017, College Publications, London, 2019, pp.1-4.

J.-Y.Beziau, "Arbitrariness Symbolic Key", in The arbitrariness of the sign in question - Proceedings of a CLG100 Workshop, Geneva, January 10-12, 2017, College Publications, London, 2019, pp.423-448.

J.-Y.Beziau "Risoto et Rosita au Pays du Rire - A Comic Trip for the Few Happy Francophones", Trágica, v.12, n.2 (2019), p.125-149.

J.-Y.Beziau "1st World Logic Day: 14 January 2019", Logica Universalis, vol.13 (2019), pp.1-20.

2018

J.-Y.Beziau, “Dice: a hazardous symbol for chance?”, in Logic, Intelligence and Artifices: Tributes to Tarcísio H. C. Pequeno,, College Publication, London, 2018, pp.365-385.

J.-Y.Beziau “Logic Prizes et Cætera”, Logica Universalis, vol.12 (2018), pp.271-296.

J.-Y.Beziau, "The Lvov-Warsaw School: A True Mythology", in Ángel Garrido and Urszula Wybraniec-Skardowska (eds), The Lvov-Warsaw School. Past and Present, Birkhäuser, Basel, 2018, pp.779-815.

J.-Y.Beziau “Universal Logic: Evolution of a Project”, Logica Universalis, vol.12 (2018), pp.1-8.

R.Silvestre and J.-Y.Beziau, “Formal Approaches to the Ontological Argument”, Journal of Applied Logics, Volume 5, Number 7 (2018), pp 1431-1438.

J.-Y.Beziau, "Tarski et Saussure au Pays de la Neige Noire", in Michel Arrivé and Anne Hénault (eds), Linguistique et Sémiotique, Atelier libre organisé dans le cadre du colloque Le Cours de Linguistique Générale, 1916-2016, Cercle Ferdinand de Saussure, Genève, 2018, pp.55-60.

J.-Y.Beziau “Is the Principle of Contradiction a Consequence of x2=x ?”, Logica Universalis, vol.12 (2018), pp.55-81.

J.-Y.Beziau, "An Analogical Hexagon", International Journal of Approximate Reasoning , 94 (2018), pp.1–17.

J.-Y.Beziau, "The Pyramid of Meaning", in J.Ceuppens, H.Smessaert, J. van Craenenbroeck and G.Vanden Wyngaerd (eds), A Coat of Many Colours - D60, Brussels, 2018.

2017

J.-Y.Beziau, "Identification of identity", special Dale Jacquette memorial issue of IfCoLog Journal of Logics and their Applications , edited by John Woods, Vol. 4 (2017), pp.3571-3581.

J.-Y.Beziau, “A Chromatic Hexagon of Psychic Dispositions , in M.Silva (ed), How Colours Matter to Philosophy, Springer International Publishing, Cham, 2017, pp.273-388.

R.Silvestre and J.-Y.Beziau, “Logic and Philosophy of Religion”, Sophia, 56 (2017), pp 139–145.

J.-Y.Beziau, “Is modern logic non-Aristotelian?, in V.Markin and D.Zaitsev (eds), The Logical Legacy of Nikolai Vasiliev and Modern Logic, Springer International Publishing, Cham, 2017, pp.19-41.

C.Chantilly and J.-Y.Beziau, “ The Hexagon of Paintings, South American Journal of Logic, Volume 3, Issue 2, 2017, pp.369-388.

J.-Y.Beziau, “Being aware of rational animals” , in G.Dodig-Crnkovic and R.Giovagnoli (eds), Representation and Reality: Humans, Animals and Machines, Springer International Publishing, Cham, 2017, pp.319-331.

J.-Y.Beziau and M.Correia, “ Squaring Easter Island, South American Journal of Logic, Volume 3, Issue 2, 2017, pp.185-193.

J.-Y.Beziau, “Opposition and order” in New Dimensions of the Square of Opposition, Philosophia Verlag, Munich, 2017, pp.321-335.

J.-Y.Beziau and S.Gerogiorgakis, “The Many Dimensions of the Square of Opposition” in New Dimensions of the Square of Opposition, Philosophia Verlag, Munich, 2017, pp.9-16.

J.-Y.Beziau, “Monosequent proof systems” in C.Caleiro, F.Dionisio, P.Gouveia, P.Mateus and J.Rasga (eds) Logic and Computation - Essays in Honour of Amilcar Sernadas, College Publication, London, 2017, pp.111-137.

J.-Y.Beziau, “ Possibility, Contingency and the Hexagon of Modalities, South American Journal of Logic, Volume 3, Issue 2, 2017, pp.273-290.

J.-Y.Beziau, “MANY 1 - A Transversal Imaginative Journey across the Realm of Mathematics”, in M.Chakraborty and M.Friend (eds), Special Issue on Mathematical Pluralism of the Journal of Indian Council of Philosophical Research, May 2017, Volume 34, Issue 2, pp 259–287.

J.-Y.Beziau, “There is no cube of opposition, in, The Square of Opposition: A Cornerstone of Thought, Birkhäuser, Basel, 2017, pp.179-193

J.-Y.Beziau and R.Silvestre “Logic and Religion”, Logica Universalis, 11 (2017), pp 1-12.

J.-Y.Beziau and G.Basti, “The Square of Opposition: A Cornerstone of Thought, in, The Square of Opposition: A Cornerstone of Thought, Birkhäuser, Basel, 2017, pp.3-12.

A.Avron and J.-Y.Beziau, “Self-extensional three-valued paraconsistent logics have no implication”, Logic Journal of the IGPL, Volume 25, Issue 2 (April 2017), pp.183-194.

J.-Y.Beziau, “Le possible et l'impossible: au-delà de la dichotomie, Actes du 35ème Congrès de l'ASPLF - Association des Sociétés de Philosophie de Langue Française (Rabat, Maroc, 26-30 Août, 2014), Vrin, Paris, 2017, pp.33-54.

2016

J.-Y.Beziau, “The Contingency of Possibility”, Principia, vol.20 n.1 (2016), pp.99-115.

J.-Y.Beziau, “Possibility, imagination and conception”, Principios, vol.23 n.40 (2016), pp.59-95.

J.-Y.Beziau and R.Giovagnoli, “The Vatican Square”, Logica Universalis, vol.10 (2016), pp.135-141.

J.-Y.Beziau, “Disentangling Contradiction from Contrariety via Incompatibility”, Logica Universalis, vol.10 (2016), pp.157-170.

J.-Y.Beziau, “Two Genuine 3-Valued Paraconsistent Logics ”, in S.Akama (ed) Towards Paraconsistent Engineering , Springer International Publishing, Cham, 2016, pp.35-47

J.-Y.Beziau, “Trivial dialetheism and the logic of paradox, Logic and Logical Philosophy, 25 (2016), pp.51-56.

J.-Y.Beziau, “ Hartley Slater and False Contradictions, South American Journal of Logic, Volume 2, 2016, pp.101-107.

J.-Y.Beziau, “Is the principle of contradiction a consequence of xx = x?” (extended abstract), Logical and Philosophical Studies, 13 (2016), pp.10-14.

J.-Y.Beziau and A.Buchsbaum, “Let us be Antilogical: Anti-Classical Logic as a Logic”, in A.Moktefi, A.Moretti and F.Schang (eds), Soyons logiques / Let us be Logical, College Publication, London, 2016, pp.1-10.

2015

J.-Y.Béziau, “Logical Autobiography 50,  in A.Koslow and A.Buchsbaum (eds), The Road to Universal Logic, Vol.2, Birkhäuser, Basel, 2015, pp.19-104.

J.-Y.Béziau, “Is logical relativity irrrational?, Studia Metodologiczne - Special issue Kazimierz Ajdukiewicz, 35 (2015), pp.63-78 .

J.-Y.Béziau, “Modelling causality”, in Conceptual Clarifications Tributes to Patrick Suppes (1922-2014), College Publication, London, 2015, pp.187-205.

J.-Y.Béziau, “Round squares are no contradictions”, in New Directions in Paraconsistent Logic, Springer, New Delhi, 2015, pp.39-55.

J.-Y.Béziau and A.Franceschetto, “Strong three-valued paraconsistent logics”, in New Directions in Paraconsistent Logic, Springer, New Delhi, 2016, pp.131-145.

J.-Y.Béziau, D.Krause and J.R. Becker Arenhart, Preface of Conceptual Clarifications Tributes to Patrick Suppes (1922-2014), College Publication, London, 2015.

J.-Y.Béziau, “Paraconsistent logic and contradictory viewpoints, Revista Brasileira de Filosofia, 242 (2015).

J.-Y.Béziau, “The relativity and universality of logic, Synthese - Special Issue Istvan Németi 70th Birthday, 192 (2015), pp.1939-1954.

J.-Y.Béziau, “Panorama de l'identité”, Al Mukhatabat, 14 (2015), pp.205-219.

2014

J.-Y.Béziau, “La puissance du symbole, in J.-Y.Béziau (ed), in La Pointure du Symbole, Petra, Paris, 2014, pp.9-34.

J.-Y.Béziau, “Linguistica et Logica Acta”, in N.Mathieu and A.-F.Schmid (eds), Modélisation et Interdisciplinarité - Six Disciplines en Quête d’Epistémologie, Quae, Versailles, 2014.

J.-Y.Béziau and S.Read, “Square of Opposition: A Diagram and a Theory in Historical Perspective, Preface of a special issue of History and Philosophy of Logic on the square of oppostion, 4 (2014), pp.315-216.

J.-Y.Béziau, “Review Essay of Truth and Falsehood: An Inquiry into Generalized Logical Values by Y. Shramko and H. Wansing, Studia Logica, 102 (2014), 1079-1085.

2013

J.-Y.Béziau, “Three Sisters : Philosophy, Mathematics and Logic, in N.Nabais and O.Pombo (ed), O lugar da Filosofia da Ciência na nova Universidade de Lisboa. University of Lisbon, 2013, pp.271-291.

J.-Y.Béziau, “The metalogical hexagon of opposition, Argumentos, 10 (2013), pp.111-122.

2012

J.-Y.Béziau, “The power of the hexagon”, Logica Universalis, vol.6 (2012), pp.1-43.

J.-Y.Béziau, “Pure alethic modal logic”, Coginitio, vol.13 (2012), pp.25-36.

J.-Y.Béziau, “Les modèles selon Alain Badiou”, Al Mukhatabat, 1/3 (2012)., pp.251-305.

J.-Y.Béziau, “The new rising of the square of opposition”, in J.-Y.Béziau and D.Jacquette (eds), Around and Beyond the Square of Opposition, Birkhäuser, Basel, 2012, pp.6-24.

J.-Y.Béziau, “History of truth-values", in D.M.Gabbay, F.J.Pelletier and J.Woods (eds) Handbook of the History of Logic , Vol. 11 - Logic: a history of its central concepts, Elsevier, Amsterdam, 2012, pp.233-305.

J.-Y.Béziau, “La logique universelle: de la logique moderne à la logique post-moderne”, in A.-F-Schmid (ed), Epistémologie des Frontières, Petra, Paris, 2012.

J.-Y.Béziau and G.Payette, Preface to The Square of Opposition - a General Framework for Cognition, Peter Lang, Bern, 2012, pp.9-22.

J.-Y.Béziau and D.Jacquette, Preface to Around and Beyond the Square of Opposition, Birkhäuser, Basel, 2012.

J.-Y.Béziau, Preface of Universal Logic: An Anthology - From Paul Hertz to Dov Gabbay, Birkhäuser, Basel, 2012, pp.v-xii.

J.-Y.Béziau, “Paralogics and the theory of valuation”, Universal Logic: An Anthology - From Paul Hertz to Dov Gabbay, Birkhäuser, Basel, 2012, pp.361-372.

J.-Y.Béziau, “Review Essay of Constructive Negation and Paraconsistency by Sergei Odintsov”, Studia Logica, 100 (2012), pp.653-657.

2011

T.Pequeno and J.-Y.Béziau, “Rules of the game", in J.-Y.Beziau and M.E.Coniglio (eds), Logic without frontiers, College Publication, London, 2011, pp.131-144.

M.V.Kritz and J.-Y.Béziau, “Théorie et Modèle II”, Cadernos UFS de Filosofia, 10 (2011), pp.7-16.

J.-Y.Béziau and M.E.Coniglio, “To distribute or not to distribute?", Logic Journal of the Interest Group in Pure and Applied Logics, 19 (2011), pp.566-583.

J.-Y.Béziau, “Rougier: Logique et Métaphyisque”, in P.Zordan (ed) Proceedings of the 4th World Confrence on Metaphysics, Dykinson, 2011, pp.464-472.

J.-Y.Béziau and M.E.Coniglio, “WAC006 - For the Sake of Logic", Preface to Logic without frontiers, College Publication, London, 2011, pp.vii-xiv.

J.-Y.Béziau, “Badiou et les modèles”, in I.Vodoz et F.Tarby (eds), Autour d'Alain Badiou, Germina, Paris, 2011.

J.-Y.Béziau, “A new four-valued approach to modal logic”, Logique et Analyse 54 (2011).

2010

J.-Y.Béziau, “Logic is not logic”, Abstracta 6 (2010), pp.73-102.

J.-Y.Béziau, “What is a possible world ?", in G.Imaguire and D.Jacquette (eds), Possible worlds, Philosophia Verlag, Munich, 2010, pp.55-69.

J.-Y.Béziau, The Challenge of Combining Logics, Logic Journal of the IGPL, 19 (2010), p.543.

J.-Y.Béziau, “Truth as a mathematical object", Principia 14 (2010), pp.31–46.

J.-Y.Béziau and C.Chantilly, “Salomé Multiscreen”, in M.Sobieszczanski and C.Masoni Lacroix (eds), From Split-Screen to Multi-Screen, Peter Lang, Bern, 2010, pp.319-323.

J.-Y.Béziau and M.V.Kritz, “Théorie et Modèle I: Point de vue général et abstrait”, Cadernos UFS de Filosofia, 6 (2010), pp.9-17.

J.-Y.Béziau, Preface to Logica Universalis Special Issue Is Logic Universal ?, Logica Universalis, 4 (2010), pp.161-162.

J.-Y.Béziau, “What is a logic ? - Towards axiomatic emptiness", Logical Investigations, 16 (2010), pp.272-279.

2009

J.-Y.Béziau, “Biconditional drive to paradox”, Revista Brasileira de Filosofia, 233 (2009), pp.196-201.

J.-Y.Béziau, “Bivalent semantics for De Morgan logic (the uselessness of four-valuedness)", in W.A.Carnielli, M.E.Coniglio, I.M.L.D'Ottaviano (eds), The many sides of logic, College Publication, London, 2009, pp.391-402.

J.-Y.Béziau, “Mystérieuse identité", Le même et l'autre, identité et différence - Actes du XXXIe Congrès International de l’ASPLF, Eotvos, Budapest, 2009, pp.159-162.

2008

J.-Y.Béziau and G.Payette, Preface to Logica Universalis - Special Issue on the Square of Oppostion, Logica Universalis, 2 (2008).

J.-Y.Béziau, “>What is "formal logic" ?”, in Myung-Hyun-Lee (ed), Proceedings of the XXII World Congress of Philosophy, vol.13, Korean Philosophical Association, Seoul, 2008, pp.9-22.

2007

J.-Y.Béziau, W.A.Carnielli and D.M.Gabbay, Preface to Handbook of Paraconsistency, College Publication, London, 2007, pp.ix-xi.

J.-Y.Béziau, “Adventures in the paraconsistent jungle”, in Handbook of Paraconsistency, College Publication, London, 2007, pp.63-80.

J.-Y.Béziau, “Sentence, proposition and identity”, Synthese, 154 (2007), pp.371-382.

J.-Y.Béziau, Review Essay of From Peirce to Skolem – A neglected chapter in the history of logic by G.Brady, The Review of Modern Logic, 11 (2007), pp.155-161.

J.-Y.Béziau, Preface to Logica Universalis Volume 1 Issue 1, Logica Universalis, 1 (2007), pp.1-2.

J.-Y.Béziau and D.Krause, Preface to Synthese Special Issue New Trends in the Foundations of Science, Synthese, 154 (2007), pp.1-2.

J.-Y.Béziau, “Many-valued and Kripke semantics”, in J. van Benthem et al. (eds), The Age of Alternative Logics, Springer, Dordrecht, 2006, pp.89-101.

2006

J.-Y.Béziau, “Paraconsistent logic!”, Sorites, 17 (2006), pp.17-26.

J.-Y.Béziau, “13 Questions about universal logic”, Bulletin of the Section of Logic, 35 (2006), pp.133-150.

J.-Y.Béziau, “Transitivity and paradoxes”, in J.Skilters (ed), The Baltic International Yearbook of Cognition, Logic and Communication, University of Riga, Riga, 2006, pp.207-211.

J.-Y.Béziau, “Les axiomes de Tarski”, in R.Pouivet and M.Rebuschi (eds), La philosophie en Pologne 1918-1939, Vrin, Paris, 2006, pp.135-149.

J.-Y.Béziau, “The paraconsistent logic Z - A possible solution to Jaskowski's problem”, Logic and Logical Philosophy, 15 (2006), pp.99-111

J.-Y.Béziau, “Les universités face à la globalisation: vers une université mondiale?”, in Journée de l'Unesco 2004, vol.10, F.Naishtat (ed), Unesco, Paris, 2006, pp.207-211

2005

J.-Y.Béziau, Preface of Logica Universalis: Towards a general theory of logic, Birkhäuser, Basel, 2005, pp.vii-x.

J.-Y.Béziau and M.E.Coniglio, “Combining conjunction with disjunction”, in Proceedings of IICAI-05: 2nd Indian International Conference on Artificial Intelligence, Bhanu Prasad (ed), 2005, pp. 1648-1658

J.-Y.Béziau, “Paraconsistent logic from a modal viewpoint”, Journal of Applied Logic, 3 (2005), pp.7-14.

J.-Y.Béziau, “From consequence operator to universal logic: a survey of general abstract logic”, in Logica Universalis: Towards a general theory of logic, Birkhäuser, Basel, 2005, pp.3-17.

J.-Y.Béziau, Review Essay of The Search for Mathematical Roots 1870-1940 (Logics, Set Theories and the Foundations of Mathematics from Cantor through Russell to Gödel) by I. Grattan-Guiness, The Review of Modern Logic, 10 (2005), pp.135-138.

N.C.A. da Costa, J.-Y.Béziau & O.A.S.Bueno, “On the Usefulness of Paraconsistent Logic” in D.Vanderveken (ed), Logic, Thought and Action, Springer, Dordrecht, 2005, pp.465-478

J.-Y.Béziau, “Le Château de la Quantification et ses Fantômes Démasqués”, in La quantification dans la logique moderne, P.Joray (ed), L'harmattan, Paris, 2005, pp.211-260.

2004

P.Suppes and J.-Y.Béziau, “Semantic computation of truth based on associations already learned”, Journal of Applied Logic, 2 (2004), pp.457-467.

J.-Y.Béziau, “A paradox in the combination of logics’, in Workshop on Combination of Logics: Theory and Applications, W.A.Carnielli, F.M.Dionisio and P.Mateus (ed), IST, Lisbon, 2004, pp.75-78.

A.Buchsbaum and J.-Y.Béziau, “Introduction of implication and generalization in axiomatic calculi”, in Aspects of Universal Logic, J.-Y.Béziau, A.Costa-Leite and A.Facchini (eds), Université de Neuchâtel, Neuchâtel, 2004, pp.231-254

J.-Y.Béziau, “What is the principle of identity? (identity, logic and congruence)”, in Logica: teoria, aplicacoes e reflexoes, F.T.Sautter and H. de Araujo Feitosa (eds), CLE, Campinas, 2004, pp.163-172.

J.-Y.Béziau, “Non truth-functional many-valued semantics”, in Aspects of Universal Logic, J.-Y.Béziau, A.Costa-Leite and A.Facchini (eds), Université de Neuchâtel, Neuchâtel, 2004, pp.199-218

2003

J.-Y.Béziau, “Bivalence, exluded middle and non contradiction’, in The Logica Yearbook 2003, L.Behounek (ed), Academy of Sciences, Prague, 2003, pp.73-84.

J.-Y.Béziau, “New light on the square of oppositions and its nameless corner”, Logical Investigations, 10, (2003), pp.218-232.

J.-Y.Béziau, “Quine on identity”, Principia, 7 (2003), pp.1-15.

2002

J.-Y.Béziau, “Are paraconsistent negations negations ? ”, in Paraconsistency: the logical way to the inconsistent, W.Carnielli et al. (eds), Marcel Dekker, New-York, 2002, pp.465-486.

J.-Y.Béziau, “S5 is a paraconsistent logic and so is first-order classical logic”, Logical Investigations, 9, (2002), pp.301-309.

J.-Y.Béziau, “La théorie des ensembles et la théorie des catégories: présentation de deux soeurs ennemies du point de vue de leurs relations avec les fondements des mathématiques”, Boletín de la Asociación Matemática Venezolana, 9 (2002), pp.45-53.

J.-Y.Béziau, “The philosophical import of Polish logic”, in Methodology and philosophy of science at Warsaw University, M.Talasiewicz (ed.), Semper, Warsaw, 2002 pp.109-124.

2001

J.-Y.Béziau, “What is classical propositional logic?”, Logical Investigations, 8 (2001), pp.266-277.

J.-Y.Béziau, “From paraconsistent to universal logic”, Sorites, 12 (2001), pp.5-32.

J.-Y.Béziau, “The logic of confusion”, in Proceedings of the International Conference of Artificial Intelligence IC-AI’2002, H.R.Arabnia (ed), CSREA Press, Las Vegas, 2001, pp.821-826.

J.-Y.Béziau, “Sequents and bivaluations”, Logique et Analyse, 44 (2001), pp.373-394.

2000

J.-Y.Béziau, “What is paraconsistent logic?”, in Frontiers of paraconsistent logic, D.Batens et al. (eds), Research Studies Press, Baldock, 2000, pp.95-111.

J.-Y.Béziau, “Review Essay of Van Heijenoort - Logic and its History in the Work and Writings of Jean van Heijenoort by I.H.Anellis”, Modern Logic, 8 (2000), pp.105-117.

J.-Y.Béziau, “Y a-t-il des principes logiques?”, in Princípios – Seu papel na filosofia e nas ciências, L.H.Dutra and C.A.Mortari (eds), NEL, Federal University of Santa Catarina, Florianópolis, 2000, pp.47-54.

1999

J.-Y.Béziau, “La véritable portée du théorème de Lindenbaum-Asser”, Logique et Analyse, 167-168 (1999), pp.341-359.

J.-Y.Béziau, “Classical negation can be expressed by one of its halves”, Logic Journal of the Interest Group in Pure and Applied Logics, 7 (1999), pp.145-151.

J.-Y.Béziau, “Was Frege wrong when identifying reference with truth-value ?”, Sorites, 11 (1999), pp.15-23.

N.C.A. da Costa & J.-Y.Béziau, “La logique paraconsistante”, in La preuve à la lumière de l’intelligence artificielle, J.Sallantin & J.J.Szczeciniarz (eds), Presses Universitaires de France, Paris, 1999, pp.107-115.

J.-Y.Béziau, “The mathematical structure of logical syntax” in Advances in contemporary logic and computer science, W.A.Carnielli and I.M.L.D’Ottaviano (eds), American Mathematical Society, Providence, 1999, pp.1-17.

J.-Y.Béziau, “Rules, derived rules, permissible rules and the various types of systems of deduction”, in Proof, types and categories, E.H.Hauesler and L.C.Pereira (eds), PUC, Rio de Janeiro, 1999, pp.159-184.

J.-Y.Béziau, “A logical analysis of singular terms”, Sorites, 10 (1999), pp.6-14.

J.-Y.Béziau, “Newton da Costa, filosofo da contradição”, in Pensamento Original Made in Brazil, A.C.Secchin, R.A.Dantas and A. Alonso (eds), Oficina do Autor, Rio de Janeiro, 1999.

J.-Y.Béziau, “The future of paraconsistent logic”, Logical Studies, 2 (1999), pp.1-28.

J.-Y.Béziau, “A sequent calculus for Lukasiewicz’s three-valued logic based on Suszko’s bivalent semantics”, Bulletin of the Section of Logic, 28 (1999), pp.89-97.

J.-Y.Béziau, “Ruth Barcan Marcus est-elle la mère du fils de Wittgenstein ? (Considérations existentialistes sur la formule de Barcan) ”, Manuscrito, 22 (1999), pp.11-27.

1998

N.C.A. da Costa & J.-Y.Béziau, “Définitions, théories des objets et paraconsistance”, Theoria, 32 (1998), pp.367-379.

J.-Y.Béziau, “Idempotent full paraconsistent negations are not algebraizable”, Notre Dame Journal of Formal Logic, 39 (1998), pp.135-139.

J.-Y.Béziau, “Do sentences have identity ?”, in Proceedings of the XXth World Congress of Philosophy, The Paideia Project, Boston, 1998.

J.-Y.Béziau, “Recherches sur la logique abstraite: les logiques normales”, Acta Universitatis Wratislaviensis, 18 (1998), pp.105-114.

J.-Y.Béziau, “De Morgan lattices, paraconsistency and the excluded middle”, Boletim da Sociedade Paranaense de Matemática, 18 (1998), pp.169-172.

1997

D.Krause & J.-Y.Béziau, “Relativizations of the principle of identity”, Logic Journal of the Interest Group in Pure and Applied Logics, 5 (1997), pp.327-338.

J.-Y.Béziau, “What is many-valued logic ?”, in Proceedings of the 27th International Symposium on Multiple-Valued Logic, IEEE Computer Society, Los Alamitos, 1997, pp.117-121.

N.C.A. da Costa & J.-Y.Béziau, “Overclassical logic”, Logique et Analyse, 157 (1997), pp.31-44.

J.-Y.Béziau, “O suicídio segundo Arthur Schopenhauer”, Discurso, 28 (1997), pp.127-143.

J.-Y.Béziau, “La logique paraconsistante”, in N.C.A. da Costa, Logiques classiques et non classiques, Masson, Paris, 1997, pp.237-255.

J.-Y.Béziau, “Théroie de la valuation”, in N.C.A. da Costa, Logiques classiques et non classiques, Masson, Paris, 1997, pp.256-272.

J.-Y.Béziau, Preface to N.C.A. da Costa, Logiques classiques et non classiques, Masson, Paris, 1997, pp.7-10.

J.-Y.Béziau, Preface to N.C.A. da Costa, O conhecimento científico, Discurso, São Paulo, 1997, pp.11-15.

J.-Y.Béziau, “Logic may be simple”, Logic and Logical Philosophy, 5 (1997), pp.129-147.

1996

J.-Y.Béziau, “Identity, logic and structure”, Bulletin of the Section of Logic, 25 (1996), pp.89-94.

N.C.A. da Costa, J.-Y.Béziau & O.A.S.Bueno, “Malinowski and Suszko on many-valued logics : On the reduction of many-valuedness to two-valuedness”, Modern Logic, 6 (1996), pp.272-299.

N.C.A. da Costa & J.-Y.Béziau, “Théorie paraconsistante des ensembles”, Logique et Analyse, 153-154 (1996), pp.51-67.

1995

J.-Y.Béziau, “Negation : what it is and what it is not”, Boletim da Sociedade Paranaense de Matemática, 15 (1995), pp.37-43.

N.C.A. da Costa, J.-Y.Béziau & O.A.S.Bueno, “Aspects of paraconsistent logic”, Bulletin of the Interest Group in Pure and Applied Logics, 4 (1995), pp.597-614.

N.C.A. da Costa, O.A.S.Bueno & J.-Y.Béziau, “What is Semantics? A Brief note on a huge question”, Sorites, 3 (1995), pp.43-47.

N.C.A. da Costa, J.-Y.Béziau & O.A.S.Bueno, “Paraconsistent logic in a historical perspective”, Logique et Analyse, 150-152 (1995), pp.111-125.

1994

J.-Y.Béziau, “Du Pont’s paradox and the problem of intensional logic”, in Logica’93 - Proceedings of the 7th International Symposium, P.Kolar & V.Svodoba (eds), Prague, 1994, pp.62-65.

J.-Y.Béziau, “De la logique formelle à la logique abstraite”, Boletim da Sociedade Paranaense de Matemática, 14 (1994), pp.41-50.

N.C.A. da Costa & J.-Y.Béziau, “Théorie de la valuation”, Logique et Analyse, 146 (1994), pp.95-117.

N.C.A. da Costa & J.-Y.Béziau, “La théorie de la valuation en question”, in Proceedings of the Ninth Latin American Symposium on Mathematical Logic, M.Abad (ed), Universidad del Sur, Baíha Blanca, 1994, pp.95-104.

J.-Y.Béziau, “Universal logic”, in Logica’94 - Proceedings of the 8th International Symposium, T.Childers & O.Majer (eds), Prague, 1994, pp.73-93.

J.-Y.Béziau, “Théorie législative de la négation pure”, Logique et Analyse, 147-148 (1994), pp.209-225.

1993

J.-Y.Béziau, “La logique abstraite au sein de la mathématique moderne”, Ruch Filozoficzny, 50 (1993), pp.289-293.

J.-Y.Béziau, “Nouveaux résultats et nouveau regard sur la logique paraconsistante C1”, Logique et Analyse, 141-142 (1993), pp.45-58.

J.-Y.Béziau, “La critique Schopenhauerienne de l’usage de la logique en mathématiques”, O Que Nos Faz Pensar, 7 (1993), pp.81-88.

J.-Y.Béziau, “On the formalization of the principium rationis sufficientis”, Bulletin of the Section of Logic, 22 (1993), pp.2-3.

N.C.A. da Costa & J.-Y.Béziau, “Carnot’s logic”, Bulletin of the Section of Logic, 22 (1993), pp.98-105.

1992

J.-Y.Béziau, “O princípio de razão suficiente e a lógica segundo Arthur Schopenhauer”, in Século XIX : O Nascimento da Ciência Contemporânea, F.R.R.Évora (ed), Cle-Unicamp, Campinas, 1992, pp.35-39.

1990

J.-Y.Béziau, “Logiques construites suivant les méthodes de da Costa”, Logique et Analyse, 131-132 (1990), pp.259-272.

1989

J.-Y.Béziau, “Calcul des séquents pour logique non-alèthique”, Logique et Analyse, 125-126 (1989), pp.143-155.