The Road to Universal Logic. Volume I (2015)
- Diaconescu, Răzvan. 2015. “The Algebra of Opposition (and Universal Logic Interpretations).” (14 diagrams)
- Gaines, Brian R. 2015. “Universal Logic as a Science of Patterns.” (131 diagrams)
- Guitart, René. 2015. “Hexagonal Logic of the Field $\mathbb{F}_8$ as a Boolean Logic with Three Involutive Modalities.” (4 diagrams)
- Horn, Laurence. 2015. “On the Contrary: Disjunctive Syllogism and Pragmatic Strengthening.” (15 diagrams)
- Lenzen, Wolfgang. 2015. “Caramuel and the ‘Quantification of the Predicate.’” (6 diagrams)
- Read, Stephen. 2015. “John Buridan on Non-Contingency Syllogisms.” (3 diagrams)
- Smessaert, Hans, and Lorenz Demey. 2015. “Béziau’s Contributions to the Logical Geometry of Modalities and Quantifiers.” (41 diagrams)
