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modus tollens

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Also known as modus tollendo tollens, MT

if X implies Y, and Y isn't true, then neither is X

In the Vinony graph

Vinony's link graph records 105 inbound references to modus tollens, and connects out to contraposition, reductio ad absurdum and first-order logic.

It is catalogued under topics including Classical logic, Latin logical phrases and Rules of inference.

Vinony links it to 28 Wikipedia language editions.

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