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Tautology · Rigorous Reasoning · Rigorous Reasoning

Concept · Foundations

Tautology

A statement that is true under every possible truth-value assignment to its atomic parts.

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Why it matters

Tautologies are logical truths of propositional form; they are the backbone of logical laws and equivalences.

Where this shows up

Units and lessons using this concept

Following the links will take you to the page where this term is introduced in context.

Units (1)

Propositional Logic: Form, Connectives, and Valid InferenceStudents learn to identify atomic and compound statements, master the five connectives of propositional logic, symbolize natural-language…

Lessons (1)

Truth Tables, Equivalence, and ValidityPropositional Logic: Form, Connectives, and Valid Inference

Related

Other concepts in Foundations

A, E, I, O Propositions Accessibility Relation Argument Atomic Statement Base Rate Bayes Factor Calibration Cardinality Cartesian Product Categorical Proposition Categorical Syllogism Circularity