# classical logic

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## English[edit]

### Noun[edit]

**classical logic** (*countable and uncountable*, *plural* **classical logics**)

- A kind of logic based on the principles that each proposition has a truth value of either "true" or "false", but not both, and that if a proposition were to be both true and false or neither true nor false then a result would be that all propositions would be both true and false.
*The Lindenbaum-Tarski algebra of propositional***classical logic**is a Boolean algebra.