1. Existence of Finite Total Equivalence Systems for Certain Closed Classes of 3-Valued Logic Functions

   • Ilya Makarov

   OriginalPaper 25 February 2015 Pages: 1 - 26

2. Characteristic Inference Rules

   • Alex Citkin

   OriginalPaper 25 February 2015 Pages: 27 - 46

3. Contrary-to-Duty Reasoning: A Categorical Approach

   • Clayton Peterson

   OriginalPaper 30 January 2015 Pages: 47 - 92

4. Inference Rules in Nelson’s Logics, Admissibility and Weak Admissibility

   • Sergei Odintsov
   • Vladimir Rybakov

   OriginalPaper 04 January 2015 Pages: 93 - 120

5. On a Distinction of Two Facets of Meaning and its Role in Proof-theoretic Semantics

   • Nissim Francez

   OriginalPaper 03 March 2015 Pages: 121 - 127