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Mirrors > Home > ILE Home > Th. List > wi | GIF version |
Description: If 𝜑 and 𝜓 are wff's, so is (𝜑 → 𝜓) or "𝜑 implies 𝜓." Part of the recursive definition of a wff. The left-hand wff is called the antecedent, and the right-hand wff is called the consequent. In the case of (𝜑 → (𝜓 → 𝜒)), the middle 𝜓 may be informally called either an antecedent or part of the consequent depending on context. |
Ref | Expression |
---|---|
wph | wff 𝜑 |
wps | wff 𝜓 |
Ref | Expression |
---|---|
wi | wff (𝜑 → 𝜓) |
Colors of variables: wff set class |
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