combinatorial property

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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 design — theory is the part of combinatorial mathematics that deals with the existence and construction of systems of finite sets whose intersections have specified numerical properties. For instance, a balanced incomplete block design (usually called for …   Wikipedia

• Combinatorial species — In combinatorial mathematics, the theory of combinatorial species is an abstract, systematic method for analysing discrete structures in terms of generating functions. Examples of discrete structures are (finite) graphs, permutations, trees, and… …   Wikipedia

• Combinatorial number system — In mathematics, and in particular in combinatorics, the combinatorial number system of degree k (for some positive integer k), also referred to as combinadics, is a correspondence between natural numbers (taken to include 0) N and k… …   Wikipedia

• Property B — In mathematics, Property B is a certain set theoretic property. Formally, given a finite set X , a collection C of subsets of X , all of size n , has Property B iff we can partition X into two disjoint subsets Y and Z such that every set in C… …   Wikipedia

• Kazhdan's property (T) — In mathematics, a locally compact topological group G has property (T) if the trivial representation is an isolated point in its unitary dual equipped with the Fell topology. Informally, this means that if G acts unitarily on a Hilbert space and… …   Wikipedia

• Kalmanson combinatorial conditions — In mathematics, the Kalmanson combinatorial conditions are a set of conditions on the distance matrix used in determining the solvability of the traveling salesman problem. These conditions apply to a special kind of cost matrix, the Kalmanson… …   Wikipedia

• Associative property — This article is about associativity in mathematics. For associativity in the central processor unit memory cache, see CPU cache. For associativity in programming languages, see operator associativity. In mathematics, associativity is a property… …   Wikipedia

• Platonic solid — In geometry, a Platonic solid is a convex polyhedron that is regular, in the sense of a regular polygon. Specifically, the faces of a Platonic solid are congruent regular polygons, with the same number of faces meeting at each vertex; thus, all… …   Wikipedia

• Permutation — For other uses, see Permutation (disambiguation). The 6 permutations of 3 balls In mathematics, the notion of permutation is used with several slightly different meanings, all related to the act of permuting (rearranging) objects or values.… …   Wikipedia

• Natural proof — In computational complexity theory, a natural proof is a certain kind of proof establishing that one complexity class differs from another one. While these proofs are in some sense natural , it can be shown (assuming a widely believed conjecture… …   Wikipedia