contrapositv.
/kɒntrəˈpɒzɪt/ Logic.
= contrapone v.
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the mind > mental capacity > philosophy > logic > logical proposition > conversion of a proposition > convert [verb (transitive)]
convert1638
turn1654
reconvert1849
contrapone1864
infinitate1864
contraposit1880
1880 Princeton Rev. Sept. 260 Yes again, for otherwise he could not contraposit and convert.
1882 Mind 7 441 Mutating the premisses and contrapositing O.
1887 J. N. Keynes Stud. & Exerc. Formal Logic (ed. 2) ii. viii. 144 Under our present supposition..we may contraposit (β).
1906 J. N. Keynes Stud. & Exerc. Formal Logic (ed. 4) iii. vi. 365 Taking the simple constructive dilemma given above, and contrapositing the major.
This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2018).
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