From Wikipedia, the free encyclopedia
|Look up tautology in Wiktionary, the free dictionary.|
Tautology may refer to:
- Tautology (rhetoric), using different words to say the same thing, or a series of self-reinforcing statements that cannot be disproved because they depend on the assumption that they are already correct
- Tautology (logic), a technical notion in formal logic, universal unconditioned truth, always valid
- Tautology (rule of inference), a rule of replacement for logical expressions in some systems of propositional logic
|This disambiguation page lists articles associated with the same title.
If an internal link led you here, you may wish to change the link to point directly to the intended article.