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general sieve

См. также в других словарях:

  • 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

  • General number field sieve — In number theory, the general number field sieve (GNFS) is the most efficient classical algorithm known for factoring integers larger than 100 digits. Heuristically, its complexity for factoring an integer n (consisting of log2 n bits) is of …   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 analysis — A sieve analysis is a practice or procedure used to assess the particle size distribution of a granular material. The size distribution is often of critical importance to the way the material performs in use. A sieve analysis can be performed on… …   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 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

  • General bacterial porin family — Pfam box Symbol = Porin 1 Name = Gram negative porin width =250 caption = Pfam= PF00267 InterPro= IPR001702 SMART= PROSITE = PDOC00498 SCOP = 1mpf TCDB = 1.B.1 OPM family= 31 OPM protein= 1pho PDB=PDB3|2fgrA:21 351 PDB3|2fgqX:20 351PDB3|1pho :27… …   Wikipedia

  • Quadratic sieve — The quadratic sieve algorithm (QS) is a modern integer factorization algorithm and, in practice, the second fastest method known (after the general number field sieve). It is still the fastest for integers under 100 decimal digits or so, and is… …   Wikipedia

  • Special number field sieve — The special number field sieve (SNFS) is a special purpose integer factorization algorithm. The general number field sieve (GNFS) was derived from it.The special number field sieve is efficient for integers of the form r e plusmn; s , where r and …   Wikipedia

  • Rational sieve — In mathematics, the rational sieve is a general algorithm for factoring integers into prime factors. It is essentially a special case of the general number field sieve, and while it is far less efficient than the general algorithm, it is… …   Wikipedia

  • Surgical sieve — The surgical sieve is a nickname for a type of thought process in the medical profession. It has several purposes. Firstly, it is a typical example of how to organise a structured examination answer for medical students and doctors when they are… …   Wikipedia

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