Modal logic

https://www.wikidata.org/wiki/Q210841

Field Hierarchy

Parent
Chemistry 29.4M papers	Materials science 19M papers	Composite material 8.9M papers	Polymer chemistry 1.1M papers
Modal 99.5k papers
Current
Modal logic 6,565 papers
Child
Normal modal logic 3,302 papers	Accessibility relation 2,231 papers	Epistemic modal logic 2,218 papers	Kripke semantics 1,308 papers
Modal operator 1,137 papers	Modal μ-calculus 772 papers	S5 743 papers	Common knowledge (logic) 741 papers

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History