Matrix which differs from the identity matrix by one elementary row operation
In mathematics, an elementary matrix is a matrix which differs from the identity matrix by one single elementary row operation. The elementary matrices generate the general linear group GLn(F) when F is a field. Left multiplication (pre-multiplication) by an elementary matrix represents elementary row operations, while right multiplication (post-multiplication) represents elementary column operations.
Elementary row operations are used in Gaussian elimination to reduce a matrix to row echelon form. They are also used in Gauss–Jordan elimination to further reduce the matrix to reduced row echelon form.
mathematics, an elementarymatrix is a matrix which differs from the identity matrix by one single elementary row operation. The elementary matrices generate...
Binary matrix (zero-one matrix) Elementarymatrix Exchange matrixMatrix of ones Pauli matrices (the identity matrix is the zeroth Pauli matrix) Householder...
classes of elementarymatrix is involutory, namely the row-interchange elementarymatrix. A special case of another class of elementarymatrix, that which...
In mathematics, a block matrix or a partitioned matrix is a matrix that is interpreted as having been broken into sections called blocks or submatrices...
invertible matrix. The method is named after Carl Friedrich Gauss (1777–1855). To perform row reduction on a matrix, one uses a sequence of elementary row operations...
In linear algebra, a diagonal matrix is a matrix in which the entries outside the main diagonal are all zero; the term usually refers to square matrices...
a shear matrix or transvection, an elementarymatrix that represents the addition of a multiple of one row or column to another. Such a matrix may be derived...
In linear algebra, an orthogonal matrix, or orthonormal matrix, is a real square matrix whose columns and rows are orthonormal vectors. One way to express...
In linear algebra, an invertible complex square matrix U is unitary if its matrix inverse U−1 equals its conjugate transpose U*, that is, if U ∗ U = U...
expressed as a finite product of elementary matrices. Furthermore, the following properties hold for an invertible matrix A: ( A − 1 ) − 1 = A {\displaystyle...
-dimensional matrix A {\displaystyle A} . This is usually done for the purpose of performing the same elementary row operations on the augmented matrix ( A |...
column. The reduced row echelon form of a matrix is unique and does not depend on the sequence of elementary row operations used to obtain it. The variant...
A Frobenius matrix is a special kind of square matrix from numerical analysis. A matrix is a Frobenius matrix if it has the following three properties:...
adjugate of a square matrix A is the transpose of its cofactor matrix and is denoted by adj(A). It is also occasionally known as adjunct matrix, or "adjoint"...
(Conder, Robertson & Williams 1992, p. 19). Let Tij := eij(1) be the elementarymatrix with 1's on the diagonal and in the ij position, and 0's elsewhere...
the elementary divisors of A; these can be immediately read off from a matrix in Jordan form, but they can also be determined directly for any matrix by...
one replaces Tietze moves for the fundamental group presentation by elementarymatrix operations for the presentation matrices for H n ( X ; Z ) {\displaystyle...
square matrix. The determinant of a matrix A is commonly denoted det(A), det A, or |A|. Its value characterizes some properties of the matrix and the...
square root of a matrix extends the notion of square root from numbers to matrices. A matrix B is said to be a square root of A if the matrix product BB is...
rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix R = [...
matrices used in mathematics, science and engineering. A matrix (plural matrices, or less commonly matrixes) is a rectangular array of numbers called entries...
Internet industry association Elementary column operations, an operation performed on the columns of an elementarymatrix in mathematics Engineering change...
operator in genetic algorithms Elementary row operations, an operation performed on the rows of an elementarymatrix in mathematics Ero (spider), a genus...
definiteness of a symmetric real matrix. Namely, the matrix is reduced to an upper triangular matrix by using elementary row operations, as in the first...
In mathematics, the matrix exponential is a matrix function on square matrices analogous to the ordinary exponential function. It is used to solve systems...