formal logic

Existence Predicate

An existence predicate, often found in free logics, is a logical construct that specifically asserts the existence of the object…

5 days ago

Ex Falso Quodlibet: The Principle of Explosion

Ex falso quodlibet, or the principle of explosion, is a logical tenet where any conclusion, true or false, can be…

5 days ago

Erotetic Logic: The Logic of Questions

Erotetic logic is the formal study of questions. It examines question structures, their logical relationships with answers, and the principles…

5 days ago

Elimination Rule in Logical Inference

An elimination rule in logic simplifies formulas by removing connectives or quantifiers. It's crucial for deriving conclusions from premises, forming…

5 days ago

Double Turnstile Symbol (⊨) in Logic

The double turnstile (⊨) symbol signifies semantic entailment or logical consequence. It indicates that the truth of certain propositions guarantees…

5 days ago

Double Negation Elimination

Double negation elimination is a core principle in classical logic. It states that a statement preceded by two negations is…

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Dominant Connective in Logic

The dominant connective in a logical formula is the one with the largest scope. Understanding this concept is crucial for…

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Distributive Predication in Logic

Distributive predication is a logical property where a predicate applies to each member of a subject class individually, not to…

5 days ago

Understanding Distributed Terms in Categorical Propositions

A term is distributed in a categorical proposition when the statement refers to all members of the class designated by…

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Disjunct: Understanding Components of a Disjunction

A disjunct is one of the component propositions within a disjunction. Each disjunct represents an alternative to the others, forming…

5 days ago