Modal logic extends classical logic with the ability to express not only ‘P is true’, but also statements like ‘P is known’ or ‘P is necessarily true’. We will define several varieties of normal modal logic systems (K, T, D,S4, S5), providing both their semantics and their axiomatic proof systems, and prove their standard soundness and ...
Modal logic extends classical logic with the ability to express not only ‘P is true’, but also statements like ‘P is known’ or ‘P is necessarily true’. We will define several varieties of normal modal logic systems (K, T, D,S4, S5), providing both their semantics and their axiomatic proof systems, and prove their standard soundness and ...
What is logic? General Introduction
25mPropositional Logic: Syntax
15mPropositional Logic: Semantics
10mSemantic Tableaux Method for Propositional Logic: General Examples
27mSemantic Tableaux Method: Some Puzzles
52mSemantic Tableaux Method-3: More puzzles
19mLimitations of Classical Logic
19mOrigin of Modal Logic: Historical Survey
31mOrigin of Modal Logic: Strict Implication
26mStrict Implication
24mStrict Implication: Examples
28mLanguage of Normal Modal Logic
21mLanguage of Modal Logic, Modal Sentences- 1
28mLanguage of Modal Logic 2: Syntax
31mAxiomatic Modal Logic: Some Proofs
26mSemantics of Modal Logic: Relational Structures
24mKripke semantics for Modal Logic systems
28mKripke semantics for Modal Logic: Some Examples
25mKripke Semantics for Modal Logic : Examples
29mSemantic Tableaux method I
31mSemantic Tableaux method II
26mPossible worlds and Modal realism
31mConditional logic introduction
21mConditional logic C
21mConditional logics: C, C , S, C1, C2 & conclusion
44m