A free variable in logic and mathematics is one not bound by quantifiers or assigned a specific value. It represents…
A logical error in syllogistic reasoning where an argument improperly uses four distinct terms instead of the required three, rendering…
Dynamic modal logic explores necessary and possible connections between events. It extends traditional modal logic to analyze how states change…
Doxastic modal logic explores the reasoning behind beliefs. It models how rational agents form and update their beliefs, providing a…
Discharge is the act of eliminating an assumption within a logical derivation. It's a crucial step, often used to prove…
The deduction theorem states that if a statement can be derived from a set of premises plus an additional statement,…
Boethius' theses are two formulas in propositional logic: (A → B) → ¬ (A → ¬ B) and (A →…
The Barcan formula in modal logic states that if something exists, then it necessarily exists. It explores the relationship between…
Affine logics, a specialized branch of linear logic, explore the properties of affine transformations and their direct impact on logical…
Phrases are fundamental building blocks of sentences, offering meaning and structure. They combine words to act as a single grammatical…