1. Polarity Semantics for Negation as a Modal Operator

   • Yuanlei Lin
   • Minghui Ma

   OriginalPaper 22 October 2019 Pages: 877 - 902

2. Adaptive Fregean Set Theory

   • Diderik Batens

   OriginalPaper 10 November 2019 Pages: 903 - 939

3. About the Unification Type of Modal Logics Between \(\mathbf {KB}\) and \(\mathbf {KTB}\)

   • Philippe Balbiani
   • Çiğdem Gencer

   OriginalPaper 12 November 2019 Pages: 941 - 966

4. Subminimal Logics in Light of Vakarelov’s Logic

   • Satoru Niki

   OriginalPaper 01 November 2019 Pages: 967 - 987

5. On Modal Logics of Model-Theoretic Relations

   • Denis I. Saveliev
   • Ilya B. Shapirovsky

   OriginalPaper 07 December 2019 Pages: 989 - 1017

6. Logics for Belief as Maximally Plausible Possibility

   • Giacomo Bonanno

   OriginalPaper 05 December 2019 Pages: 1019 - 1061

7. Integrally Closed Residuated Lattices

   • José Gil-Férez
   • Frederik Möllerström Lauridsen
   • George Metcalfe

   OriginalPaper 14 November 2019 Pages: 1063 - 1086

8. On Correspondence of Standard Modalities and Negative Ones on the Basis of Regular and Quasi-regular Logics

   • Krystyna Mruczek-Nasieniewska
   • Marek Nasieniewski

   OriginalPaper 18 January 2020 Pages: 1087 - 1123