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sieve number

См. также в других словарях:

  • Sieve of Eratosthenes — Sieve of Eratosthenes: algorithm steps for primes below 121 (including optimization of starting from prime s square). In mathematics, the sieve of Eratosthenes (Greek: κόσκινον Ἐρατοσθένους), one of a number of prime number sieves, is a simple,… …   Wikipedia

  • Sieve theory — is a set of general techniques in number theory, designed to count, or more realistically to estimate the size of, sifted sets of integers. The primordial example of a sifted set is the set of prime numbers up to some prescribed limit X .… …   Wikipedia

  • Sieve (mail filtering language) — Sieve is a language that can be used to create filters for electronic mail. It owes its creation to the CMU Cyrus Project, creators of Cyrus IMAP server.The language is not tied to any particular operating system or mail architecture. It requires …   Wikipedia

  • Sieve of Atkin — In mathematics, the sieve of Atkin is a fast, modern algorithm for finding all prime numbers up to a specified integer. It is an optimized version of the ancient sieve of Eratosthenes, but does some preliminary work and then marks off multiples… …   Wikipedia

  • Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… …   Wikipedia

  • Sieve of Sundaram — In mathematics, the sieve of Sundaram is a simple deterministic algorithm for finding all prime numbers up to a specified integer. It was discovered by an Indian student S. P. Sundaram from Sathyamangalam in 1934. [cite journal |author=V.… …   Wikipedia

  • Sieve (mathematics) — In mathematics, sieve has several possible definitions: * In number theory, a sieve is a technique for counting the size of certain sets whose precise number of elements is hard to determine. See sieve theory, general number field sieve, and… …   Wikipedia

  • Sieve — In general, a sieve separates wanted/desired elements from unwanted material using a tool such as a mesh, net or other filtration or distillation methods, but it is also used for classification of powders by particle size, or for size measurement …   Wikipedia

  • sieve of eratosthenes — ˌerəˈtästhəˌnēz Usage: usually capitalized E Etymology: after Eratosthenes fl 3d century B.C. Greek astronomer and geographer : a device for finding prime numbers consisting of the writing down of the odd numbers from 3 up in succession and of… …   Useful english dictionary

  • Number — For other uses, see Numbers (disambiguation). A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational… …   Wikipedia

  • Number Field Sieve — Algorithme de factorisation par crible sur les corps de nombres généralisé En mathématiques, le crible général de corps de nombres est l algorithme, fondé sur l arithmétique modulaire, pour la décomposition en produit de facteurs premiers le plus …   Wikipédia en Français

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