Weakening Rule in Logic
The weakening rule allows adding propositions to a logical derivation without invalidating…
Ternary Semantics in Logic
Ternary semantics extend possible worlds semantics using a ternary relation, often in…
Strict Implication
Strict implication defines a relationship where the truth of the antecedent necessarily…
Logical Consequence
Logical consequence describes the relationship where true premises guarantee a true conclusion…
Harmony in Logic and Philosophy
Harmony in logic signifies a balance in introduction and elimination rules for…
Double Turnstile Symbol (⊨) in Logic
The double turnstile (⊨) symbol signifies semantic entailment or logical consequence. It…
Disjunction Introduction Rule
The disjunction introduction rule states that from any single proposition, one can…
Designated Value in Logic
A designated value in logic functions similarly to truth in classical systems.…
Connexive Logic
Connexive logic explores the principles of connection between propositions, focusing on relationships…