• mathematics, a P-matrix is a complex square matrix with every principal minor is positive. A closely related class is that of P 0 {\displaystyle P_{0}} -matrices...
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  • Thumbnail for Matrix multiplication
    columns in the first matrix must be equal to the number of rows in the second matrix. The resulting matrix, known as the matrix product, has the number...
    41 KB (6,581 words) - 13:39, 28 February 2025
  • Thumbnail for Matrix (mathematics)
    In mathematics, a matrix (pl.: matrices) is a rectangular array or table of numbers or other mathematical objects with elements or entries arranged in...
    117 KB (14,356 words) - 18:05, 20 June 2025
  • solution. Any P-matrix is a Q-matrix. Conversely, if a matrix is a Z-matrix and a Q-matrix, then it is also a P-matrix. P-matrix Z-matrix Karamardian,...
    3 KB (274 words) - 21:07, 14 April 2025
  • The Matrix is a 1999 science fiction action film written and directed by the Wachowskis. It is the first installment in the Matrix film series, starring...
    171 KB (16,894 words) - 05:58, 9 June 2025
  • for a block matrix. Suppose p, q are nonnegative integers such that p + q > 0, and suppose A, B, C, D are respectively p × p, p × q, q × p, and q × q matrices...
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  • exists an invertible matrix P {\displaystyle P}  and a diagonal matrix D {\displaystyle D} such that P − 1 A P = D {\displaystyle P^{-1}AP=D} . This is...
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  • An n × n permutation matrix can represent a permutation of n elements. Pre-multiplying an n-row matrix M by a permutation matrix P, forming PM, results...
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  • distribution to matrix-valued random variables. The probability density function for the random matrix X (n × p) that follows the matrix normal distribution...
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  • especially linear algebra, an M-matrix is a matrix whose off-diagonal entries are less than or equal to zero (i.e., it is a Z-matrix) and whose eigenvalues have...
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  • invertible matrix (non-singular, non-degenarate or regular) is a square matrix that has an inverse. In other words, if some other matrix is multiplied...
    46 KB (7,049 words) - 07:20, 17 June 2025
  • Thumbnail for Transpose
    transpose of a matrix is an operator which flips a matrix over its diagonal; that is, it switches the row and column indices of the matrix A by producing...
    20 KB (2,550 words) - 21:08, 14 April 2025
  • 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 = [...
    102 KB (15,800 words) - 15:17, 18 June 2025
  • {\displaystyle m\times n} complex matrix A {\displaystyle \mathbf {A} } is an n × m {\displaystyle n\times m} matrix obtained by transposing A {\displaystyle...
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  • decomposition of a matrix A {\displaystyle A} into a unitary matrix P {\displaystyle P} and a Hessenberg matrix H {\displaystyle H} such that P H P ∗ = A {\displaystyle...
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  • the matrix variate beta distribution is a generalization of the beta distribution. If U {\displaystyle U} is a p × p {\displaystyle p\times p} positive...
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  • called similar if there exists an invertible n-by-n matrix P such that B = P − 1 A P . {\displaystyle B=P^{-1}AP.} Similar matrices represent the same linear...
    8 KB (1,081 words) - 07:46, 17 June 2025
  • Thumbnail for Rabies virus
    highly conserved. These genes code for nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G) and the viral RNA polymerase (L). The complete...
    38 KB (4,574 words) - 00:25, 20 June 2025
  • Look up Matrix, matrix, matrixes, or matrices in Wiktionary, the free dictionary. Matrix (pl.: matrices or matrixes) or MATRIX may refer to: Matrix (mathematics)...
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  • statistics, the projection matrix ( P ) {\displaystyle (\mathbf {P} )} , sometimes also called the influence matrix or hat matrix ( H ) {\displaystyle (\mathbf...
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  • in the Matrix franchise to be directed solely by Lana. It is the sequel to The Matrix Revolutions (2003) and the fourth installment in The Matrix film series...
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  • Because matrix multiplication is such a central operation in many numerical algorithms, much work has been invested in making matrix multiplication algorithms...
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  • columns of the left matrix is the same as the number of rows of the right matrix. That is, if A is an m × n matrix and B is an s × p matrix, then n needs to...
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  • the Frobenius companion matrix of the monic polynomial p ( x ) = c 0 + c 1 x + ⋯ + c n − 1 x n − 1 + x n {\displaystyle p(x)=c_{0}+c_{1}x+\cdots...
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  • In linear algebra, a minor of a matrix A is the determinant of some smaller square matrix generated from A by removing one or more of its rows and columns...
    16 KB (2,729 words) - 21:46, 13 April 2025
  • The Matrix Revolutions is a 2003 American science fiction action film written and directed by the Wachowskis. The direct sequel to The Matrix Reloaded...
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  • Thumbnail for Principal component analysis
    Principal component analysis (category Matrix decompositions)
    variance on the second coordinate, and so on. Consider an n × p {\displaystyle n\times p} data matrix, X, with column-wise zero empirical mean (the sample mean...
    117 KB (14,851 words) - 06:44, 17 June 2025
  • The Matrix Reloaded is a 2003 American science fiction action film written and directed by the Wachowskis. It is the sequel to The Matrix (1999) and the...
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  • the precision matrix or concentration matrix is the matrix inverse of the covariance matrix or dispersion matrix, P = Σ − 1 {\displaystyle P=\Sigma ^{-1}}...
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  • The Matrix is an American cyberpunk media franchise consisting of four feature films, beginning with The Matrix (1999) and continuing with three sequels...
    93 KB (7,487 words) - 03:49, 26 May 2025