ordering matrix
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Path-ordering — In theoretical physics, path ordering is the procedure (or a meta operator {mathcal P}) of ordering a product of many operators according to the value of one chosen parameter::{mathcal P} left [O 1(sigma 1)O 2(sigma 2)dots O N(sigma N) ight] := O … Wikipedia
Walsh matrix — In mathematics, a Walsh matrix is a specific square matrix, with dimensions a power of 2, the entries of which are +1 or 1, and the property that the dot product of any two distinct rows (or columns) is zero. The Walsh matrix was proposed by… … Wikipedia
Rotation matrix — In linear algebra, a rotation matrix is a matrix that is used to perform a rotation in Euclidean space. For example the matrix rotates points in the xy Cartesian plane counterclockwise through an angle θ about the origin of the Cartesian… … Wikipedia
Positive-definite matrix — In linear algebra, a positive definite matrix is a matrix that in many ways is analogous to a positive real number. The notion is closely related to a positive definite symmetric bilinear form (or a sesquilinear form in the complex case). The… … Wikipedia
In-place matrix transposition — In place matrix transposition, also called in situ matrix transposition, is the problem of transposing an N imes M matrix in place in computer memory: ideally with O(1) (bounded) additional storage, or at most with additional storage much less… … Wikipedia
Corner transfer matrix — In statistical mechanics, the corner transfer matrix describes the effect of adding a quadrant to a lattice. Introduced by Rodney Baxter in 1968 as an extension of the Kramers Wannier row to row transfer matrix, it provides a powerful method of… … Wikipedia
Design structure matrix — The design structure matrix (DSM) (also referred to as dependency structure method, dependency structure matrix, problem solving matrix (PSM), incidence matrix, n square matrix or design precedence matrix) is a compact, matrix representation of a … Wikipedia
Design Structure Matrix — The design structure matrix (DSM) is a system modeling tool. It has two main strengths. First, it can represent a large number of system elements and their relationships in a compact way that highlights important patterns in the data (such as… … Wikipedia
Directed acyclic graph — An example of a directed acyclic graph In mathematics and computer science, a directed acyclic graph (DAG i … Wikipedia
Local consistency — In constraint satisfaction, local consistency conditions are properties of constraint satisfaction problems related to the consistency of subsets of variables or constraints. Several such conditions exist, the most known being node consistency,… … Wikipedia
Controlled grammar — Controlled grammars[1] are a class of grammars that extend, usually, the context free grammars with additional controls on the derivations of a sentence in the language. A number of different kinds of controlled grammars exist, the four main… … Wikipedia
