combinatorial technique

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• Combinatorial chemistry — involves the rapid synthesis or the computer simulation of a large number of different but structurally related molecules or materials. It is especially common in CADD (Computer aided drug design) and can be done online with web based software,… …   Wikipedia

• Combinatorial proof — In mathematics, the term combinatorial proof is often used to mean either of two types of proof of an identity in enumerative combinatorics that either states that two sets of combinatorial configurations, depending on one or more parameters,… …   Wikipedia

• Combinatorial principles — In proving results in combinatorics several useful combinatorial rules or combinatorial principles are commonly recognized and used. The rule of sum, rule of product, and inclusion exclusion principle are often used for enumerative purposes.… …   Wikipedia

• Twelve-tone technique — Arnold Schoenberg, the inventor of Twelve tone technique …   Wikipedia

• Double counting (proof technique) — In combinatorics, double counting, also called counting in two ways, is a combinatorial proof technique for showing that two expressions are equal by demonstrating that they are two ways of counting the size of one set. In this technique, which… …   Wikipedia

• Szemerédi–Trotter theorem — In mathematics, the Szemerédi–Trotter theorem is a result in the field of combinatorial geometry. It asserts that given n points and m lines in the plane,the number of incidences (i.e. the number of point line pairs, such that the point lies on… …   Wikipedia

• Systematic Evolution of Ligands by Exponential Enrichment — SELEX ( Systematic Evolution of Ligands by Exponential Enrichment ), also referred to as in vitro selection or in vitro evolution , is a combinatorial technique in molecular biology for producing oligonucleotides of either single stranded DNA or… …   Wikipedia

• Coupon collector's problem — In probability theory, the coupon collector s problem describes the collect all coupons and win contests. It asks the following question: Suppose that there are n coupons, from which coupons are being collected with replacement. What is the… …   Wikipedia

• Coupon collector's problem (generating function approach) — The coupon collector s problem can be solved in several different ways. The generating function approach is a combinatorial technique that allows to obtain precise results. We introduce the probability generating function (PGF) G(z) where… …   Wikipedia

• Combinatoriality — In music using the twelve tone technique combinatoriality is a quality shared by some twelve tone tone rows whereby the row and one of its transformations combine to form a pair of aggregates.[1] Arnold Schoenberg, creator of the twelve tone… …   Wikipedia

• Travelling salesman problem — The travelling salesman problem (TSP) is an NP hard problem in combinatorial optimization studied in operations research and theoretical computer science. Given a list of cities and their pairwise distances, the task is to find a shortest… …   Wikipedia