1. Universal Logic: Evolution of a Project

   • Jean-Yves Beziau

   OriginalPaper 27 April 2018 Pages: 1 - 8

2. Aristotle’s Prototype Rule-Based Underlying Logic

   • John Corcoran

   OriginalPaper 19 April 2018 Pages: 9 - 35

3. Two Early Arabic Applications of Model-Theoretic Consequence

   • Wilfrid Hodges

   OriginalPaper 20 March 2018 Pages: 37 - 54

4. Is the Principle of Contradiction a Consequence of \(x^{2}=x\)?

   • Jean-Yves Beziau

   OriginalPaper 27 April 2018 Pages: 55 - 81

5. Natural Deduction for Post’s Logics and their Duals

   • Yaroslav Petrukhin

   OriginalPaper 29 March 2018 Pages: 83 - 100

6. Positive Jonsson Theories

   • Bruno Poizat
   • Aibat Yeshkeyev

   OriginalPaper 08 March 2018 Pages: 101 - 127

7. On a Generalization of Equilogical Spaces

   • Fabio Pasquali

   OriginalPaper 10 April 2018 Pages: 129 - 140

8. Venn Diagram with Names of Individuals and Their Absence: A Non-classical Diagram Logic

   • Reetu Bhattacharjee
   • Mihir Kr. Chakraborty
   • Lopamudra Choudhury

   OriginalPaper 21 February 2018 Pages: 141 - 206

9. A Characterisation of Some \(\mathbf {Z}\)-Like Logics

   • Krystyna Mruczek-Nasieniewska
   • Marek Nasieniewski

   OriginalPaper Open access 10 February 2018 Pages: 207 - 219

10. Composition-Nominative Logics as Institutions

    • Alexey Chentsov
    • Mykola Nikitchenko

    OriginalPaper 02 April 2018 Pages: 221 - 238

11. A Molecular Logic of Chords and Their Internal Harmony

    • Ingolf Max

    OriginalPaper 11 April 2018 Pages: 239 - 269