1st World Congress

Montreux, Switzerland
June 1-3 2007




2nd World Congress

Corte, Corsica
June 17-20 2010


Two special issues of Logica Universalis: Square and Hexagon

The Square of Oppositon: a General Framework for Cognition

Around and Beyond the Square of Opposition

5th World Congress - Rapa Nui : Easter Island - November 11-15, 2016

Special Issue of HPL - The Square of Opposition in Historical Perspectives
New Dimensions of the Square of Opposition

Special Issue of LU - The Vatican Square
The Square of Opposition: A Cornerstone of Thought


3rd World Congress

Beirut, Lebanon
June 26-30,2012



4th World Congress
Vatican, May 5-9 2014

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