Studia Logica · 2017 · 10 citations · 11 references
HumanitiesMathematicsPhilosophyFormal MethodsLogicFirst-order LogicFrame SemanticsModal LogicModal TheoryModel TheoryDefinabilityModal Operators
11
On Extensions of Elementary Logic
Per Lindström · Theoria · 1969 · 341 citations
Interpolation for extended modal languages
Balder ten Cate · Journal of Symbolic Logic · 2005 · 50 citations
Johan van Benthem · Logica Universalis · 2006 · 25 citations