Pivot element — The pivot or pivot element is the element of a matrix, an array, or some other kind of finite set, which is selected first by an algorithm (e.g. Gaussian elimination, Quicksort, Simplex algorithm, etc.), to do certain calculations. In the case of … Wikipedia
Pivot table — A pivot table is a data summarization tool found in data visualization programs such as spreadsheets (e.g. Microsoft Excel, OpenOffice.org, Calc, Lotus 1 2 3). Among other functions, they can automatically sort, count, and total the data stored… … Wikipedia
Row echelon form — In linear algebra a matrix is in row echelon form if * All nonzero rows are above any rows of all zeroes, and * The leading coefficient of a row is always strictly to the right of the leading coefficient of the row above it.This is the definition … Wikipedia
Apache Pivot — Entwickler Apache Software Foundation Aktuelle Version 2.0 (10. Januar 2011) Betriebs … Deutsch Wikipedia
Tone row — P 0 tone row melody from Arnold Schoenberg s Op. 25 Minuet Trio opening[1] … Wikipedia
Gaussian elimination — In linear algebra, Gaussian elimination is an algorithm for solving systems of linear equations. It can also be used to find the rank of a matrix, to calculate the determinant of a matrix, and to calculate the inverse of an invertible square… … Wikipedia
Entity-attribute-value model — (EAV), also known as object attribute value model and open schema is a data model that is used in circumstances where the number of attributes (properties, parameters) that can be used to describe a thing (an entity or object ) is potentially… … Wikipedia
Montante's method — is a linear algebra method to calculate solutions to systems of linear equations, and finding matrix inverses, adjoints and determinants. It is named after its discoverer René Mario Montante.Its main feature is working exclusively using integer… … Wikipedia
Entity–attribute–value model — (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In… … Wikipedia
LUP-разложение — (LUP декомпозиция) представление данной матрицы в виде произведения где матрица является нижнетреугольной с единицами на главной диагонали, верхнетреугольная общего вида, а т. н. матрица перестановок получаемая из единичной матрицы путём… … Википедия
Ведущий столбец, ведущая строка — [pivot column, pivot row] элементы алгоритма перебора допустимых базисных решений (невырожденной) задачи линейного программирования при ее решении симплексным методом. Это (последовательно сменяемые) столбец и строка симплексной таблицы, над… … Экономико-математический словарь
