Definitions
Wiktionary
- n. philosophy, logic A valid form of argument in which the consequent of a conditional proposition is denied, thus implying the denial of the antecedent. Modus tollens has this form:
Etymologies
- From modus tollendō tollēns ("the mode where the denying denies"), from modus ("mode") and forms of tollō ("I deny"). (Wiktionary)
Examples
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Lists
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Philosophical Jargon
Words philosophical writers use to give the illusion of technical competence, including up-trippingly specialised senses of words that have other jobs during daylight hours.
akrasia, akrates, particularism, particularist, mereology, deontology, cognitivism, naturalism, anti-naturalism, ethics, phenomenology, metaethics and 220 more...
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logic
tautology, sorites, modus ponens, modus tollens, no true scotsman, syllogism, celarent, bulverism, barbara, abduction, abductive reasoning, turing machine and 3 more...
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logic
words used in Logic
contrapositive, inverse, converse, contradiction, modus tollens, modus ponens, rebus
Tweets
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garyth123 If A, then B.
Not B.
Therefore, not A. Dec 8, 2008