Sommaire du Fascicule no. 1-2

A Note on some Characterization of Distributive Lattices of Finite Length
An Observation Concerning Porte’s Rule in Modal Logic
Categorical Abstract Algebraic Logic: Referential π-Institutions
Closure Operators on Complete Almost Distributive Lattices-III
Non-Fregean Logics of Analytic Equivalence (I)
Non-Fregean Logics of Analytic Equivalence (II)
On Some Applied First-Order Theories which Can Be Represented by Definitions
Unifiability and Structural Completeness in Relation Algebras and in Products of Modal Logic S5

Sommaire du Fascicule no. 3-4

A Short and Readable Proof of Cut Elimination for Two First-Order Modal Logics
Minimal Sequent Calculi for Łukasiewicz’s Finitely-Valued Logics
On Halldén Completeness of Modal Logics Determined by Homogeneous Kripke Frames
Simple Logics for Basic Algebras
Tense Polyadic N × M-Valued Łukasiewicz–Moisil Algebras