A Characteristic Frame for Positive Intuitionistic and Relevance Logic Yale Weiss OriginalPaper 05 September 2020 Pages: 687 - 699
Relational Representation Theorems for Extended Contact Algebras Philippe BalbianiTatyana Ivanova OriginalPaper 17 September 2020 Pages: 701 - 723
Labelled Sequent Calculi for Lewis’ Non-normal Propositional Modal Logics Matteo Tesi OriginalPaper 18 September 2020 Pages: 725 - 757
Belnap–Dunn Modal Logic with Value Operators Yuanlei LinMinghui Ma OriginalPaper 30 September 2020 Pages: 759 - 789
A Simple Logical Matrix and Sequent Calculus for Parry’s Logic of Analytic Implication Damian E. Szmuc OriginalPaper 03 February 2021 Pages: 791 - 828
Free Logics are Cut-Free Andrzej Indrzejczak OriginalPaper Open access 13 January 2021 Pages: 859 - 886
Correction to: The Hahn Embedding Theorem for a Class of Residuated Semigroups Sándor Jenei Correction 10 February 2021 Pages: 887 - 901