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inverse

The conditional "if not P, then not Q" formed from "if P, then Q."

The inverse of A → B is ¬A → ¬B. It is not equivalent to the original conditional; it is equivalent to the converse.

Examples

  • The inverse of "if it's a dog, it's a mammal" is "if it's not a dog, it's not a mammal," which is false.

See also

converse contrapositive
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