1. Semi De Morgan Logic Properly Displayed

   • Giuseppe Greco
   • Fei Liang
   • Alessandra Palmigiano

   OriginalPaper 25 February 2020 Pages: 1 - 45

2. Pooling Modalities and Pointwise Intersection: Axiomatization and Decidability

   • Frederik Van De Putte
   • Dominik Klein

   OriginalPaper Open access 17 March 2020 Pages: 47 - 93

3. Recapturing Dynamic Logic of Relation Changers via Bounded Morphisms

   • Ryo Hatano
   • Katsuhiko Sano

   OriginalPaper 28 March 2020 Pages: 95 - 124

4. A Conservative Negation Extension of Positive Semilattice Logic Without the Finite Model Property

   • Yale Weiss

   OriginalPaper 10 March 2020 Pages: 125 - 136

5. Non-distributive Relatives of ETL and NFL

   • Daniil Kozhemiachenko

   OriginalPaper 10 March 2020 Pages: 137 - 165

6. A Generalized Proof-Theoretic Approach to Logical Argumentation Based on Hypersequents

   • AnneMarie Borg
   • Christian Straßer
   • Ofer Arieli

   OriginalPaper Open access 02 April 2020 Pages: 167 - 238