Modus tollens
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| - | {{Rules of inference}} | + | In [[classical logic]], '''''modus tollens''''' (or '''''modus tollendo tollens''''') ([[Latin language|Latin]] for "the way that denies by denying") has the following [[argument form]]: |
| - | In [[classical logic]], '''''modus tollens''''' (or '''''modus tollendo tollens''''') ([[Latin language|Latin]] for "the way that denies by denying")<ref>Stone, Jon R. 1996. ''Latin for the Illiterati: Exorcizing the Ghosts of a Dead Language''. London, UK: Routledge: 60.</ref> has the following [[argument form]]: | + | |
| :If ''P'', then ''Q''. | :If ''P'', then ''Q''. | ||
| :Not ''Q''. | :Not ''Q''. | ||
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In classical logic, modus tollens (or modus tollendo tollens) (Latin for "the way that denies by denying") has the following argument form:
- If P, then Q.
- Not Q.
- Therefore, not P.
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