De Morgan’s Rules
De Morgan's rules provide two fundamental laws for transforming negated logical expressions.…
De Morgan Negation Explained
A De Morgan negation is a fundamental logical operator characterized by its…
Degree-Theoretic Semantics
Degree-theoretic semantics measures sentence truth in degrees, moving beyond binary true/false. This…
Definite Descriptions: Identifying Uniqueness in Language
A definite description is a linguistic phrase that uniquely identifies a specific…
Definiens: Understanding the Components of a Definition
The definiens refers to the words or phrases used to explain the…
Deductively Equivalent Theories
Two theories are deductively equivalent if they can prove the exact same…
Deduction Theorem
The deduction theorem states that if a statement can be derived from…
De Dicto vs. De Re: Understanding Linguistic Reference
De dicto refers to how a statement attributes a property to a…
Decision Procedure
A decision procedure is a systematic algorithm that determines if statements are…
Cut in Proof Theory
A cut rule in proof theory introduces an intermediate conclusion within a…