scientific article

zbMath0643.03005MaRDI QIDQ3784039

Peter Forrest

Publication date: 1987

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

modal operatorsextension of propositional modal logic S5naturalness of propositions

Mathematics Subject Classification ID

Modal logic (including the logic of norms) (03B45) Philosophical and critical aspects of logic and foundations (03A05)

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