Tautology is popularly defined two main ways: 1) An argument that derives its

Tautology is popularly defined two main ways: 1) An argument that derives its

Tautology is popularly defined two main ways: 1) An argument that derives its conclusion from one of its premises, or 2) logical statements that are necessarily true, as in (A∨~A). How are these two definitions reconciled? The second definition is only a statement; it has no premises or conclusions.

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