
Musa Akrami
Islamic Azad University, Science and
Research Branch of Tehran, Iran
"Iranian Logicians on the Exceptions to the Existential Import"

Jean-Yves Beziau
Federal University of Rio de Janeiro and Brazilian Research Council, Brazil
"Under the Sign of the Hexagon"

Peter Schröder-Heister
Department of Computer Science,
University of Tübingen, Germany
"Towards a Calculus of Squares"

Mihir Chakraborty
Department of Pure Mathematics
University of Kolkata, India
"The Square of Opposition and Visual Cognition"

Saloua Chatti
Department of Philosophy, University of Tunis, Tunisia
"Avicenna on possibility and necessity"
Robert L. Gallagher
Civilization Sequence Program
American University of Beirut, Lebanon
"Aristotle on contrariety in Metaphysics 10"
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Raffaela Giovagnoli
Pontifical Lateran University, Vatican
"Epistemological Reflexions on the Fregean Square of Opposition"

Oliver Kutz
Spatial Cognition, Department of Informatics, University of Bremen, Germany
"Logical Pluralism and the Square of Opposition in Formal Ontology"

Amirouche Moktefi
Institut de Recherche Interdisciplinaire sur les Sciences et la Technologie, France
"Some post-syllogistic structures of opposition"

François Nicolas
Ecole Normale Supérieure d'Ulm, Paris
"On the hexagon of opposition in music"

Claudio Pizzi
Department of Philosophy, University of Siena, Italy
"Contingency Logics and Modal Squares of Opposition"

Jean Sallantin
LIRMM - CNRS Montpellier, France
"A formal structure of global debates by n-opposition logics"
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