in linear algebra, matrix multiplication is a binary operation that produces a matrix from two matrices. For matrix multiplication, the number of columns...
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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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complexity of matrix multiplication dictates how quickly the operation of matrix multiplication can be performed. Matrix multiplication algorithms are a central...
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Matrix chain multiplication (or the matrix chain ordering problem) is an optimization problem concerning the most efficient way to multiply a given sequence...
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then the inverse of the example matrix should be used, which coincides with its transpose. Since matrix multiplication has no effect on the zero vector...
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multiplication. Most commonly, a matrix over a field F {\displaystyle F} is a rectangular array of elements of F {\displaystyle F} . A real matrix...
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Strassen algorithm (category Matrix multiplication algorithms)
Volker Strassen, is an algorithm for matrix multiplication. It is faster than the standard matrix multiplication algorithm for large matrices, with a...
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Hadamard product (matrices) (redirect from Hadamard multiplication)
a matrix of the multiplied corresponding elements. This operation can be thought as a "naive matrix multiplication" and is different from the matrix product...
21 KB (2,733 words) - 23:12, 23 March 2025
are referred to as matrix norms. Matrix norms differ from vector norms in that they must also interact with matrix multiplication. Given a field K ...
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kernel of DNN is large sparse-dense matrix multiplication. In the field of numerical analysis, a sparse matrix is a matrix populated primarily with zeros as...
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5\end{smallmatrix}}\right]} . In geometry, a diagonal matrix may be used as a scaling matrix, since matrix multiplication with it results in changing scale (size)...
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denotes the n-by-n identity matrix and the multiplication used is ordinary matrix multiplication. If this is the case, then the matrix B is uniquely determined...
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Cross product (redirect from Cross product matrix)
of a determinant of a special 3 × 3 matrix. According to Sarrus's rule, this involves multiplications between matrix elements identified by crossed diagonals...
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Kernel (linear algebra) (redirect from Kernel (matrix))
then x + y ∈ Null(A). This follows from the distributivity of matrix multiplication over addition. If x ∈ Null(A) and c is a scalar c ∈ K, then cx ∈...
24 KB (3,724 words) - 14:30, 6 May 2025
property of matrix multiplication that I m A = A I n = A {\displaystyle I_{m}A=AI_{n}=A} for any m × n {\displaystyle m\times n} matrix A {\displaystyle...
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under matrix addition and matrix multiplication since matrix multiplication is associative. Three-dimensional Euclidean space with multiplication given...
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n} matrix, it is a property of matrix multiplication that I m A = A I n = A . {\displaystyle I_{m}A=AI_{n}=A.} In particular, the identity matrix serves...
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operations left scalar multiplication cv and right scalar multiplication vc may be defined. The left scalar multiplication of a matrix A with a scalar λ gives...
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which can be applied to a signal through matrix multiplication. An N-point DFT is expressed as the multiplication X = W x {\displaystyle X=Wx} , where x...
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matrix, binary matrix, relation matrix, Boolean matrix, or (0, 1)-matrix is a matrix with entries from the Boolean domain B = {0, 1}. Such a matrix can...
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Basic Linear Algebra Subprograms (redirect from General Matrix Multiply)
operations such as vector addition, scalar multiplication, dot products, linear combinations, and matrix multiplication. They are the de facto standard low-level...
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generalizations See Multiplication in group theory, above, and multiplicative group, which for example includes matrix multiplication. A very general, and...
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and practical. The n × n orthogonal matrices form a group under matrix multiplication, the orthogonal group denoted by O(n), which—with its subgroups—is...
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Backpropagation (section Matrix multiplication)
The overall network is a combination of function composition and matrix multiplication: g ( x ) := f L ( W L f L − 1 ( W L − 1 ⋯ f 1 ( W 1 x ) ⋯ ) ) {\displaystyle...
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Min-plus matrix multiplication, also known as distance product, is an operation on matrices. Given two n × n {\displaystyle n\times n} matrices A = (...
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the minimum of its arguments. The following is an example of matrix vector multiplication. There are three arrays, each with 100 elements. The code does...
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Galactic algorithm (section Matrix multiplication)
first improvement over brute-force matrix multiplication (which needs O ( n 3 ) {\displaystyle O(n^{3})} multiplications) was the Strassen algorithm: a recursive...
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\omega } is the exponent of matrix multiplication and α {\displaystyle \alpha } is the dual exponent of matrix multiplication. α {\displaystyle \alpha }...
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(\max(mkn/M^{1/2},mk+kn+mk))} . This lower bound is achievable by tiling matrix multiplication. More general results for other numerical linear algebra operations...
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Transpose (redirect from Transpose of a matrix)
straightforward exercise. If A is an m × n matrix and AT is its transpose, then the result of matrix multiplication with these two matrices gives two square...
20 KB (2,550 words) - 21:08, 14 April 2025