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subfactorial

См. также в других словарях:

  • Subfactorial — n !n 0 1 1 0 2 1 3 2 4 9 5 44 6 265 7 …   Wikipedia Español

  • Subfactorial — In mathematics, the subfactorial function is a function from the set of natural numbers to itself, whose value at n gives the number of permutations of a sequence of n distinct values in which none of the elements occur in their original place;… …   Wikipedia

  • subfactorial — subfactoˈrial (↑factorial) n(2) • • • Main Entry: ↑sub …   Useful english dictionary

  • Derangement — For the psychological condition, see psychosis. Number of possible permutations and derangements of n elements. P(n) is the number of n permutations; D(n) is the number of derangements (n permutations where all of the n elements change their… …   Wikipedia

  • Factorial — n n! 0 1 1 1 2 2 3 6 4 24 5 120 6 720 7 …   Wikipedia

  • Four fours — is a mathematical puzzle. The goal of four fours is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four (no other digit is allowed). Most versions… …   Wikipedia

  • Inclusion-exclusion principle — In combinatorial mathematics, the inclusion exclusion principle (also known as the sieve principle) states that if A 1, ..., A n are finite sets, then:egin{align}iggl|igcup {i=1}^n A iiggr| {} =sum {i=1}^nleft|A i ight sum {i,j,:,1 le i < j… …   Wikipedia

  • List of factorial and binomial topics — This is a list of factorial and binomial topics in mathematics, by Wikipedia page. See also binomial (disambiguation).*Alternating factorial *Antichain *Beta function *Binomial coefficient *Binomial distribution *Binomial proportion confidence… …   Wikipedia

  • 260 (number) — 260 (two hundred [and] sixty) is the magic constant of the n times; n normal magic square and n Queens Problem for n = 8, the size of an actual chess board.260 is also the magic constant of the Franklin magic square devised by Benjamin… …   Wikipedia

  • List of mathematics articles (S) — NOTOC S S duality S matrix S plane S transform S unit S.O.S. Mathematics SA subgroup Saccheri quadrilateral Sacks spiral Sacred geometry Saddle node bifurcation Saddle point Saddle surface Sadleirian Professor of Pure Mathematics Safe prime Safe… …   Wikipedia

  • Factorial — n n! 0 1 1 1 2 2 3 6 4 24 5 120 6 720 7 …   Wikipedia Español

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