The Power of the Hexagon

Prof. Dr. Jean-Yves Beziau, Federal University of Rio de Janeiro - UFRJ
Visiting Professor University of Munich - LMU

In this lecture I will present and discuss the hexagon of opposition, an improvement of the square of opposition due to Robert Blanché. The hexagon of Blanché is made of a triangle of contrariety and a triangle of subcontrariety linked together by the relations of contradiction and subalternation. This hexagon includes the traditional square and can be extended to three dimensional objects giving a better understanding of modalities and negations.
I will show how this simple logical structure based on three oppositions can be applied to many different concepts ranging from logic to music, through metalogic, economy, space and time.

Date: 27.01.2012

Time: 15:30 h

Location: Cartesium, Bremen