UCLA Philosophy is pleased to host the inaugural meeting of the Pan-American Symposium on the History of Logic. The symposium is a meeting of international specialists on diverse traditions in the History of Logic. Each meeting of the symposium focuses on a specific topic central to logic, with the aim of offering a comparative picture of its treatment throughout history. This year’s topic is Validity throughout History.

Featured speakers are:

Guido Alt, University of Cologne, Germany: “A Colonial Scholastic Debate on Molinist Conditionals”

Lucas Angioni, University of Campinas, Brazil: “Aristotle on Imperfect Syllogisms”

Allan Bäck, Kutztown University of Pennsylvania: “Avicenna’s Material Conditions for Syllogistical Inferences”

Bianca Bosman, University of Groningen, Netherlands: “The Changing Grounds of Validity in Medieval Latin Logic as Illustrated by the Containment Criterion”

Adam Crager, UCLA: TBD

Manuel Dahlquist, Universidad Nacional del Litoral, Argentina: “Validity and Indexicality in Buridan’s Concept of Logical Consequence”

Brendon Gillon, McGill University, Canada: “Logic in Early Classical India: Reasoning without Semantic Ascent”

Oksana Goncharko, St. Petersburg Mining University, Russia: “The Identity Principle within the Second Iconoclastic Controversy”

Katerina Ierodiakonou, Université de Genève, Switzerland / National Kapodistrian University of Athens, Greece: “Byzantine Philosophers on Valid Arguments”

Lu Jiang, Sun Yat-sen University, China: “The Ground of Validity for Formal Consequences in Ockham’s Logic”

Spencer Johnston, University of Cambridge, England: “Validity of the Relational Syllogism in Medieval Logic”

Colin Guthrie King, Providence College: “Aristotle on Deduction in Context: the Topics and Posterior Analytics“

Marko Malink, New York University: “The Peripatetic Program in Categorical Logic: From Aristotle to Leibniz”

Ahmed Abdel Meguid, Syracuse University: “Validity and Temporal Modalities in Classical Arabic Logic: A Study and Translation of al-Qazwīnī al-Katibī’s (d. 1276) and Ismā‘īl al-Gelenbevī’s (d. 1791) Modal Systems”

Joshua Mendelsohn, University of Chicago: “The ‘Premises Only’ View of Syllogisms and Its Ramifications”

Jens Lemanski, FernUniversität in Hagen, Germany: “Testing Validity with 17th century Euler-type and Phoebifer Axis Diagrams”

Parimal Patil, Harvard University: “Validity and the “Indian Syllogism”

Graham Priest, City University of New York: “Dialethic Validity”

Riccardo Strobino, Tufts University, and Christopher Martin, University of Auckland: TBD

Boaz Schuman, University of Toronto: “Validity in John Buridan’s Modal Logic”

Miroslava Trajkovski, University of Belgrade, Serbia: “The Origin of Semiotic Validity”

Justin Vlasits, Eberhard Karls Universität Tübingen, Germany: “The Stoic Syllogism through Two Tropics or, What Can You Do with a Valid, Unsound Argument?”

Anna Yermakova, Harvard University: “Non-Binary Logics of the Late 19th- and Early 20th-Century Russian Empire”

Mikko Yrjönsuuri, University of Jyvaskyla, Finland: “Formally Valid and Other Types of Validity in Paul of Venice”

Behnam Zolghadr, University of Hamburg, Germany: “Against the Law of Non-contradiction; Between the East and the West”

More information to be announced soon.