• In logic and mathematics, contraposition, or transposition, refers to the inference of going from a conditional statement into its logically equivalent...
    41 KB (6,175 words) - 22:54, 31 May 2025
  • argument: affirming the consequent and denying the antecedent. See also contraposition and proof by contrapositive. The form of a modus tollens argument is...
    13 KB (1,848 words) - 09:18, 3 May 2025
  • Thumbnail for Mathematical proof
    is often used instead of "proof by mathematical induction". Proof by contraposition infers the statement "if p then q" by establishing the logically equivalent...
    34 KB (4,229 words) - 11:05, 26 May 2025
  • a categorical statement. Note that this contraposition in the traditional logic is not same to contraposition (also called transposition) in the modern...
    22 KB (2,492 words) - 18:47, 17 August 2024
  • Thumbnail for Argument from ignorance
    technical issues, or some kind of oversight from the hiring team. Contraposition is a logically valid rule of inference that allows the creation of a...
    11 KB (1,321 words) - 04:26, 5 January 2025
  • Thumbnail for Plato
    ever-changing waters flowing through it, and all things exist as a contraposition of opposites, while Parmenides adopted an altogether contrary vision...
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  • smaller series, Σ a n {\displaystyle \Sigma a_{n}} must converge. By contraposition, if the red series Σ a n {\displaystyle \Sigma a_{n}} is proven to diverge...
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  • for lunch, then Sam also cannot have eaten an orange for lunch (by contraposition). However, merely saying that Sam did not eat an orange for lunch provides...
    6 KB (772 words) - 13:48, 17 March 2025
  • its codomain; that is, x1 ≠ x2 implies f(x1) ≠ f(x2) (equivalently by contraposition, f(x1) = f(x2) implies x1 = x2). In other words, every element of the...
    17 KB (2,589 words) - 10:13, 5 June 2025
  • for the second problem, one exists for the first problem as well. By contraposition, if no efficient algorithm exists for the first problem, none exists...
    11 KB (1,472 words) - 23:39, 6 June 2023
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    comes with music co-written by Luis F. Ochoa and includes an intriguing contraposition of rock guitars and Latin brass, utilized among other seemingly disparate...
    348 KB (33,303 words) - 04:17, 9 June 2025
  • above except [symmetry]. Clearly [symmetry] holds for ∃A while e.g. [contraposition] fails. A semantic interpretation of conditional quantifiers involves...
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  • Thumbnail for Reductio ad absurdum
    as logic and mathematics. Appeal to ridicule Argument from fallacy Contraposition List of Latin phrases Mathematical proof Prasangika Slippery slope Strawman...
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  • category theory, the term conglomerate is applied to arbitrary sets as a contraposition to the distinguished sets that are elements of a Grothendieck universe...
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  • Thumbnail for Fermat's Last Theorem
    conjecture might also simultaneously prove Fermat's Last Theorem. By contraposition, a disproof or refutation of Fermat's Last Theorem would disprove the...
    104 KB (11,728 words) - 19:17, 8 June 2025
  • Syntactically, (1) and (2) are derivable from each other via the rules of contraposition and double negation. Semantically, (1) and (2) are true in exactly the...
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  • Thumbnail for Fermi paradox
    potentially habitable worlds are. The Hart–Tipler conjecture is a form of contraposition which states that because no interstellar probes have been detected...
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  • who adopted a laissez-faire system he termed anarchistic socialism in contraposition to state socialism. This tradition has been recently associated with...
    89 KB (10,419 words) - 17:45, 27 May 2025
  • then not-B implies not-A", and vice versa), which expresses the law of contraposition. For instance, "If it's bound, it is a book; if it's not a book, it's...
    23 KB (3,114 words) - 06:31, 30 March 2025
  • Thumbnail for Raven paradox
    can be expressed as: If something is a raven, then it is black. Via contraposition, this statement is equivalent to: (2) If something is not black, then...
    57 KB (8,319 words) - 15:10, 25 May 2025
  • Thumbnail for Cao Cao
    treacherous tyrant who serves as a nemesis to Liu Bei, often depicted in contraposition as a hero trying to revive the declining Han dynasty. During the Ming...
    190 KB (28,190 words) - 09:11, 7 June 2025
  • existence or non-existence. Argument from ignorance Argument from silence Contraposition Probatio diabolica Proof by exhaustion "Absence of Evidence Is Not Evidence...
    12 KB (1,501 words) - 12:52, 26 May 2025
  • resolve this conceptual gap: First, one can put quantum physics in contraposition with classical physics: by identifying scenarios, such as Bell experiments...
    24 KB (2,888 words) - 09:12, 18 May 2025
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    cities, including Castelfranco Veneto (founded by the Trevigiani in contraposition to Padua), had become attractive to neighbouring powers, including the...
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  • non-P". "All S are not P" (E form) becomes "Some non-S are not non-P". Contraposition Converse (logic) Obversion Transposition (logic) Taylor, Courtney K...
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  • Thumbnail for V. K. Krishna Menon
    the final hours, leaving Soviet Foreign Minister Dmitri Shepilov in contraposition. Why is that we have never heard voices in connection with the freedom...
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  • and P cannot be swapped in All S are P. Philosophy portal Aristotle Contraposition Inverse (logic) Logical connective Obversion Term logic Transposition...
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  • (2a − 1)((2a)b−1 + (2a)b−2 + ... + 2a + 1) so 2p − 1 is composite. By contraposition, if 2p − 1 is prime then p is prime. If p is an odd prime, then every...
    71 KB (6,408 words) - 19:11, 6 June 2025
  • C=ND(N\otimes N)} In the classical propositional calculus, the law of contraposition p → q ≡ ¬q → ¬p is proved because the equivalence holds for all the...
    22 KB (3,789 words) - 20:54, 20 June 2024
  • Thumbnail for Negation
    (grammatical polarity) Ampheck Apophasis Binary opposition Bitwise NOT Contraposition Cyclic negation Negation as failure NOT gate Plato's beard Square of...
    19 KB (2,236 words) - 02:31, 5 January 2025