Jean-Yves Beziau is a Swiss Logician, Philosopher and Mathematician, PhD in mathematics and PhD in Philosophy. He has been working in different countries: France, Brazil, Poland, California (UCLA, Stanford, UCSD) and Switzerland.

He is the originator of Universal Logic as a general theory of logical structures. He is the founder and Editor-in-Chief of the journal Logica Universalis and book series Studies in Universal Logic, both published by Birkhäuser/Springer, Basel. He is also the founder and Editor-in-Chief of the book series Logic PhDs and the logic area editor of the Internet Encyclopedia of Philosophy.

He has organized a series of …

Jean-Yves Beziau is a Swiss Logician, Philosopher and Mathematician, PhD in mathematics and PhD in Philosophy. He has been working in different countries: France, Brazil, Poland, California (UCLA, Stanford, UCSD) and Switzerland.

He is the originator of Universal Logic as a general theory of logical structures. He is the founder and Editor-in-Chief of the journal Logica Universalis and book series Studies in Universal Logic, both published by Birkhäuser/Springer, Basel. He is also the founder and Editor-in-Chief of the book series Logic PhDs and the logic area editor of the Internet Encyclopedia of Philosophy.

He has organized a series of events on universal logic around the world: World Congress amd School on Universal Logic, Montreux 2005, Xi'an 2007, Lisbon 2010, Rio de Janeiro, 2013, Istanbul 2015.
He has made also some important contributions in paraconsistent logic, in particular he has shown that the modal logic S5 is a paraconsitent logic and that the nameless corner of the square of opposition is a paraconsistent negation. He has renewed the study of the square of opppositon organizing interdisciplinary world events on this topic (Montreux 2007, Corsica 2010, Beirut 2012, Vatican 2014, Easter Island 206) and organizing the publication of special issues of journals and books on the subject.