EntityQ302542· pop 18· linked from 64 articlesdeontic logicSign in to saveThe field of philosphical logic and a class of formal systems that are concerned with obligation, permission, and related conceptsConnectionspropositional calculusEntitymodal logicEntitythree-state logicEntityimperative logicEntityImmanuel KantEntityGottfried Wilhelm LeibnizEntityAncient GreeceEntityInternational Standard Book NumberEntityAncient GreekEntitydigital object identifierEntityInternational Standard Serial NumberEntityOCLC, Inc.Entitymedieval philosophyEntityJSTOREntitylogical contradictionEntitydeontologyEntityfuzzy logicEntityMimamsaEntityStanford Encyclopedia of PhilosophyEntitytautologyEntityCategoriesDeontic logicModal logicPhilosophical logic