Kleene’s Three-Valued Logic (K3)
Explore Stephen Cole Kleene's three-valued logic system, K3. It introduces an 'undefined'…
Independence-Friendly Logic
Independence-Friendly (IF) logic extends first-order logic, enabling richer expressions of quantifier scope…
Impossible World in Modal Logic
A hypothetical construct in modal logic, the impossible world represents a state…
Henkin Semantics
Henkin semantics offers a flexible alternative to standard first-order semantics, allowing quantifiers…
Gödel-Dummett Logic
A distinct intuitionistic logic, Gödel-Dummett logic incorporates a principle of maximal elements.…
Geach-Kaplan Sentence
A sentence type probing philosophy of language and logic. It highlights issues…
Game-Theoretic Semantics
Game-theoretic semantics interprets linguistic meaning via games between verifier and falsifier. It…
Formal Semantics
Formal semantics explores the connection between formal systems, particularly in logic and…