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Longer titles found: Complex Hadamard matrix (view), Regular Hadamard matrix (view), Butson-type Hadamard matrix (view)

searching for Hadamard matrix 5 found (55 total)

Matrix multiplication (6,581 words) [view diff] no match in snippet view article find links to article

In mathematics, specifically in linear algebra, matrix multiplication is a binary operation that produces a matrix from two matrices. For matrix multiplication

Hadamard's maximal determinant problem (2,429 words) [view diff] exact match in snippet view article find links to article

Hadamard matrix can exist only if n = 1, 2, or a multiple of 4. Hadamard matrices have been well studied, but it is not known whether an n×n Hadamard

Hadamard's inequality (851 words) [view diff] exact match in snippet view article find links to article

in this bound is attained for a real matrix N if and only if N is a Hadamard matrix. A positive-semidefinite matrix P can be written as N*N, where N* denotes

Pseudo-Hadamard transform (399 words) [view diff] exact match in snippet view article find links to article

Twofish This is the Kronecker product of an Arnold Cat Map matrix with a Hadamard matrix. James Massey, "On the Optimality of SAFER+ Diffusion", 2nd AES Conference

Hadamard product (matrices) (2,733 words) [view diff] exact match in snippet view article

^{*})\odot A=D_{\mathbf {y} }AD_{\mathbf {x} }^{*}.} Furthermore, a Hadamard matrix–vector product can be expressed as ( A ⊙ B ) y = diag ⁡ ( A D y B T