Duilio D’Alfonso
University of Palermo, Italy
"Typing duality relations"

François Beets
Dpt of Philosophy, University of Liège, Belgium
"From the Square of Oppositions to the Coincidence of Opposites"

Rainhard Bengez
Technical University of Munich, Germany
"On Deontic Hypercubes, Absolut, and Relatives Rights"

Juan Manuel Campos Benitez
Benemérita Autonomous University of Puebla, Mexico
"How to pass from the Square to the Octagon of Opposition"

Tal Dotan Ben-Soussan and
Patrizio Paoletti
The Leslie and Susan Gonda (Goldschmied) Multidisciplinary Brain Research Center, Bar-Ilan University, Israel and Research Institute for Neuroscience, Education and Didactics, Patrizio Paoletti Foundation, Italy
"Plasticity in the Square – from a philosophical model to neurocognitive applications"

Christoph Benzmüller and
Bruno Woltzenlogel Paleo
Freie Universität Berlin, Germany; Vienna University of Technology, Austria
"Gödel's Proof of God's Existence "

Frode Bjørdal
Dpt of Philosophy, University of Oslo, Norway and UFRN, Brazil
"The Cube of Opposition for Agentual Directives"

Carolina Blasio and
João Marcos
Department of Philosophy, University of Campinas, Brazil LoLITA & DIMAp, Federal University of Rio Grande do Norte, Brazil
"When the Square meets the Cross: Towards a generalized notion of entailment "

Walter Carnielli
UNICAMP, Campinas, Brazil
"Groups, not squares: exorcizing a fetish"

Massimiliano Carrara and
Daniele Chiffi
University of Padua, Padua, Italy
"A logical framework for hypotheses and their opposition relations "

Fernando Cavaliere
Cesenatico, Italy
"Iconic and Dynamic Models to represent ‘distinctive’ predicates: the Octagonal Prism and the Complex Tetrahedron of Opposition"

Saloua Chatti
Department of Philosophy, University of Tunis, Tunisia
"Al Farabi on contrary practical concepts"

Boris Chendov
Sofia, Bulgaria
"Square of opposition and its enlargement in the dyadic modal logic"

Jean-Marie Chevalier
Chaire de métaphysique et philosophie de la connaissance, Collège de France, Paris
"Representing Existential Import With Quadrants"

Janusz Ciuciura
Department of Logic and Methodology of Science, University of Lodz, Poland
"Kraszewski's Syllogistic "

Stefano Colloca
Dipartimento di Giurisprudenza, University of Pavia, Italy
"Two Kinds of Incompatibility in Law "

Yusuf Dasdemir
Divinity Faculty, Necmettin Erbakan University, Turkey
"Avicenna on the Opposition of Conditional Propositions"

Paul J.E. Dekker
University of Amsterdam, Netherlands
"A Cube, a Prism and a Fork of Oppositions"

Lorenz Demey
Center for Logic and Analytical Philosophy, KU Leuven, Belgium
"Logical Geometries and Information in the Square and its Extensions"

Lorenz Demey and Hans Smessaert
Center for Logic and Analytical Philosophy and Department of Linguistics, KU Leuven, Belgium
"Algebraic and Cognitive Aspects of Presenting Aristotelian Diagrams"

Jean-Pierre Desclés and Anca Pascu
LaLIC-STIH, Université de Paris-Sorbonne, Université de Bretagne Occidentale, France
"The “Cube of Oppositions” in the Logic of Determination of Objects (LDO) and in the Logic of Typical and Atypical Instances (LTA)"

Antonino Drago
University of Pisa, Italy
"From Aristotle’s Square of Opposition to “Tri-Unity’s Concordance”: Cusanus’ Non-Classical Arguing about God "

Laurent Dubois
Department of Philosophy, University of Brussels (ULB), Belgium
"Opposition: a Logico-Divergent Approach of the Classical Aristotelian Square"

Maria Duží
Dpt of Computer Science, Technical University of Ostrava, Czech Republic
"Squaring the Square of Opposition with empty concepts"

Patrick Eklund
Department of Computing Science, Umeå University, Sweden
"A Lative Logic view of the Filioque Addition"

Luis Estrada-González
Institute for Philosophical Research, National Autonomous University of Mexico, Mexico
"An application of quaternality theory to topos logic"

Sascha Benjamin Fink
Institute of Cognitive Science, University of Osnabrück and Institute of Philosophy, Otto-von-Guericke University, Germany
"Oppositions in Introspective Disputes & Phenomenology"

Hector Freytes, Chris de Ronde and Gabriela Domenech
Departamento de Matematica UNR-CONICET, Argentina, Dipartimento di Matematica “Ulisse Dini”, Universitá di Firenze, Italia., Instituto de Filosofía “Dr. Alejandro Korn” UBA-CONICET, Argentina, Center Leo Apostel (CLEA)
"The Orthomodular Square of Opposition and the Many Worlds Interpretation of Quantum Mechanics"

Tzu-Keng Fu
Department of Interdisciplinary Activities, New Technologies Research Centre, University of West Bohemia, Czech Republic
"On Institutional Contradiction and Organizational Plurality"

Katarzyna Gan-Krzywoszyńska & Piotr Leśniewski, Adam Mickiewicz University, Poznan, Poland
"Rationality as Indifference. On a Love-Hate Hexagon in the Foundations of Humanities"

Stamatios Gerogiorgakis
University of Erfurt, Germany
"The Mereological Square"

Raffaela Giovagnoli and Philip Larrey
Pontifical Lateran University, Vatican
"Aristotle, Frege and “Second Nature”"

Paul M. Healey
London, UK
"Back to Hegel and the right square"

Anne Hénault
Sorbonne, Paris, France
"The Square of Opposition in All its States"

Jean-Louis Hudry
Department of Philosophy, University of São Paulo, Brazil
"Aristotle on Deduction and Empty Terms"

Dale Jacquette
University of Bern, Switzerland
"Subalternation and existence presuppositions in a simplified uncoventional square of opposition"

Colin James III
Phi Logic, LLC, Colorado Springs, USA
"Recent advances in polyadic predicate logic of n-variables (PLN)"

Tomasz Jarmużek and Andrzej Pietruszczak
Department of Logic, Nicolaus Copernicus University, Torun, Poland
"Tableaus for Numerical Syllogistic"

Dany Jaspers
Department of English, HUBrussels, KULeuven, Belgium
"The Growth of Lexical Fields"

Dany Jaspers and Pieter Seuren
HUBrussels, KULeuven, Belgium and Max Planck Institute for Psycholinguistics, The Netherlands
"The Catholic factor in 20th century Square studies"

Priyedarsh Jetli
University of Mumbai, India
"Knowing and Doing Wedded through Epistemodeontic Square, Hexagon, Cube and Hexagonal Prism of Opposition"

Spencer Johnston
Department of Philosophy, University of St Andrews
"Buridan’s Octagon of Opposition & Ontological Commitment"

Tomasz Jordan
Department of Christian Philosophy, Card. Stefan Wyszynski University, Poland
"Three opposition-forming negations as truth functional unary connectives"

Andreas Kapsner
Munich Center for Mathematical Philosophy Ludwig-Maximilians-Universitat, Munich, Germany
"On Guilt and Innocence"

Rainer Kivi
Estonian Descartes Institute
"Whether Aristotle applied octagonal calculator to compute his ethics?"

William Lewis Klein
Poznan, USA
"Blood > Money > Information: The Pattern and Direction of Human History"

Yaroslav Kohan
Institute of philosophy, National Academy of Sciences, Ukraine
"Pragmatic Square of Opposition"

Przemyslaw Krzywoszynski and Jerzy W. Ochmański
Adam Mickiewicz University, Poznan, Poland
"On some oppositions between political systems: Aristotle, Montesquieu and Modern Democracy"

Geneviève Lachance
Department of Philosophy, University of Montreal, Canada and University Paris-Sorbonne, France
"Platonic Contrariety (enantia): Ancestor of the Aristotelian Notion of Contradiction (antiphasis)? "

Juliette Lemaire
Université Paris-Sorbonne
"Aristotle on Akrasia - an Ethical Square"

François Lepage
Department of Philosophy, Université de Montréal, Canada
"A Square of Opposition in Intuitionistic Logic with Strong Negation"

Franck Lihoreau
Departament of Philosophy, Communication and Information, University of Coimbra, Portugal
"Square Trust"

Vladimir Lobovikov
Department of Philosophy, Ural Federal University, Yekaterinburg, Russia
"Squares and Hexagons for moral-evaluation-functions “Faith”, “Doubt”, “Knowledge”, “Assumption” and “Toleration” in Algebra of Formal Ethics"

Gert-Jan C. Lokhorst
Delft University of Technology, Delft, The Netherlands
"Alan Ross Anderson’s New Square of Opposition "

Amirouche Moktefi and Fabien Schang
Tallin University of Technology, Estonia and Moscow State University, Russia
"Making sense of the Keynes-Johnson octagon of oppositions"

Marcos Lopes
Department of Linguistics, University of São Paulo, Brazil
"Lexical Asymmetries in the Square of Opposition "

Falvia Marcacci
Lateran Pontifical University, Vatican
"An opposition triangle in the Presocratic Literature "

John N. Martin
University of Cincinnati, USA
"The structure of ideas in the Port Royal logic"

Ingolf Max
Department of Philosophy, Section of Logic, University of Leipzig, Germany
"What is responsible for the opposition in the square?"

Giovanni Mion
Department of Humanities and Social Sciences, Istanbul Technical University
"The Square of Opposition: From Russell’s Logic to Kant’s Cosmology"

Alessio Moretti and Régis Angot-Pélissier
Nice et Le Mans, France
"The sum and the product of logical hexagon"

Petra Murinová and Vilém Novák
Institute for Research and Applications of Fuzzy Modeling - IRAFM, University of Ostrava, Czech Republic
"Analysis of generalized square of opposition"

Maria Fernanda Niño
CeReS, Université de Limoges, France
"The diplomatic virtual presence in the light of the semiotic square"

Niki Pfeifer, Giuseppe Sanfilippo and Angelo Gilio
Munich Center for Mathematical Philosophy, Ludwig-Maximilians-University Munich, Germany - Department of Mathematics and Computer Science, University of Palermo, Italy - Department of Basic and Applied Sciences for Engineering, University of Rome “La Sapienza”, Italy
"Probabilistic Interpretations of the Square of Opposition"

Claudio Pizzi
Department of Philosophy, University of Siena, Italy
"Composition and generalization of modal squares of oppositions"

Marcel Quarfood
University of Uppsala, Sweden
"Kant’s theory of modality: Hexagon or Octagon"

Jirí Raclavský
Department of Philosophy, Masaryk University (Brno), the Czech Republic
"Semantic Square of Hyperintensional Semantics, Logic and Identity Statements"

Stephen Read
Arch´e Research Centre, University of St Andrews, Scotland
"Aristotle’s Cube of Opposition"

Christian Retoré
LaBRI, Université de Bordeaux, France
"Aristotle's square of opposition and Hilbert's epsilon: some linguistic remarks"

Serge Robert and
Janie Brisson
Laboratoire LANCI, Université du Québec à Montréal, Canada
"Klein Groups as Squares of Oppositions and the Explanation of Fallacies in Reasoning"

Pierre Saint-Germier
Department of Humanities, University Lyon 1, ENS de Lyon
"Aristotle's Modal Quadrant and Two-Sided

Frédéric Sart and Alessio Moretti
Oudenaarde, Belgium - Nice, France,
"The Oppositional Geometry of the Modal System K45"

Jean Sallantin, Dominique Luzeaux and
Véronique Pinet
LIRMM - CNRS Montpellier, Ministère de la défense and Lycée Joliot Curie Sète, France
"A Matheme Structuring the Scientific Ideosphere" Modalities"

David H. Sanford
Department of Philosophy, Duke University, Durham, USA
"Necessity, Extremity, and Identity: Three Problems about Contraries"

Rodrigo de Santis and
Rosali Fernandez de Souza
Information Science Postgraduate Program, Brazilian Institute of Information in Science and Technology (IBICT) and Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
"The semiotic square and the knowledge organization: an application on popular songs classification "

Denis I.Saveliev
Steklov Mathematical Institute, Russian Academy of Sciences
"On paradoxical and non-paradoxical systems of propositions referring to each other"

Fabien Schang
Moscow State University, Russia
"Silence has no logical value. Making sense of nonsense, behind and beyond the Tractatus 7"

Nikolaus Schatt and
Rainhard Z. Bengez
Technical University Munich - TUM, Germany
"Language and Modal Logic of Strategic Decisions"

Stefan Schneider and Miray Yazgan
Institute of Cognitive Science, University of Osnabrück, Osnabrück, Germany and Institute of Happiness, Tibet
"Imagining and Thinking Triangles"

Marcin Schroeder
Akita Internacional University, Japan
"From Negation to Infinity: Logic for Non-trivial Integrated Information Systems Cannot Be Finite"

Pieter A.M. Seuren
Max Planck Institute for Psycholinguistics, The Netherlands
"Metalogical hexagons in natural logic"

Fabrice Silpa
CRILLASH, Université Antilles Guyane
"Square of Opposition in Egyptology. A logical study of Maat"

Marcos Silva
Department of Philosophy, Federal University of Ceará (UFC), Brazil
"What does it mean to negate a proposition?"

Hans Smessaert
Department of Linguistics, KU Leuven, Belgium
"The Logical Geometry of the Rhombic Dodecahedron of Oppositions "

Hans Smessaert and Lorenz Demey
Department of Linguistics and Center for Logic and Analytical Philosophy , KU Leuven, Belgium
"The Unreasonable Effectiveness of Bitstrings in Logical Geometry"

Harald Stamm
Department of German Studies (Linguistics), University of Potsdam, Germany
"The square of opposition of topologized Aristotelian quantifiers"

Constantin Teleanu
Centre Pierre Abélard, Université Paris Sorbonne, France
"La dialectique combinatoire des termes opposés dans la « figura contrariorum X » de l’Art quaternaire de Raymond Lulle "

Fabio Elias Verdiani Tfouni
Federal University of Sergipe, Brazil
"Alethic and Deontic Modalities in Language and Psychoanalysis"

Joseph Vidal-Rosset
Université de Lorraine, France
"The exact intuitionistic meaning of the square of opposition"

Jacek Waldmajer
Department of Philosophy, Opole University, Poland
"Knowledge versus Ignorance"

Paul Weingartner
University of Salzburg, Austria
"The Square of Opposition Interpreted with a Decidable Modal Logic"

Felipe Weinman
State University of Campinas – Unicamp, CNPq, Brazil
"Is the traditional square of opposition compatible with Aristotle's Prior Analytics II.15?"

Jonathan Westphal
School of Cognitive Science, ASH, Hampshire College, St. Amherst MA USA
"Duals of the Two Squares of Opposition in Vector Logic"

Urszula Wybraniec-Skardowska
Group of Logic, Language and Information, Opole University, Poland
"Logical Squares for Classical Logic Sentences"

Xunwei Zhou
Institute of Information Technology, Beijing Union University, China
"From logical square through logical rectangle to logical pie"

Amal Zgati
Université Laval, Canada
"Sémantique de la quantification restrictive"

Richard Zuber
CNRS, Paris, France
"Anaphors and the square of opposition"