The Square of Opposition: A Cornerstone of Thought

Part of the series Studies in Universal Logic pp 3-12


The Square of Opposition: A Cornerstone of Thought

  • Jean-Yves BéziauAffiliated withBrazilian Research Council, University of Brazil Email author 
  • , Gianfranco BastiAffiliated withPontifical Lateran University

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We first describe how after having started in Montreux, Switzerland in 2007, the congress on the square of opposition moved to the American University of Beirut in Lebanon in 2012 after a stop at the University Pasquale Paoli in Corsica in 2010. We then describe the square congress at the Pontifical Lateran University in the Vatican in 2014 and the resulting publications.


Fuzzy logic Interdisciplinarity Intuitionistic logic Modal logic Paraconsistent logic Square of opposition Syllogistic

Mathematics Subject Classification (2000)

Primary 00B25; Secondary 00A66 03A05 03B22 03B45; 03B53