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I removed the section about non-negative matrix approximation because there is very little reference to it in the literature (I could only 1 paper linking...

that they constructed a Hadamard matrix of order 428. As a result, the smallest order for which no Hadamard matrix is presently known is 668. Anon, would...

There appears to be nothing on Wikipedia about finding the inverse of a matrix manually -- I think this is a pretty major omission, and I only started...

Probably a significant amount of matrix rings over division rings should just be covered under the Artin-Wedderburn theorem or semisimple ring or so. Identification...

condition that the matrix be square for the induced norm (when p = 2) to be equivalent to the largest singular value. Indeed, this equivalence is true for non-square...

over-reaching promises. But it would be a bad idea to expand on the Schr/matrix equivalence in the lede.... the whys and hows... Why don't you try to improve...

April 2010 (UTC) There seems to be a problem with equivalence number 10: "A commutes with some normal matrix N with distinct eigenvalues" if and only if A...

the equivalence between tensor and matrix). I feel like I explain really badly my point. Once again, I think my small stub User:Ashigabou/Matrix calculus#Origin...

provably equivalent in complexity to matrix multiplication." I would expect the proof or a citation for the claimed equivalence. It is easy enough to see that...

or the sum of the elements on the main diagonal of a matrix, is preserved by unitary equivalence, the Jordan normal form tells us that it is equal to...

vector Square matrix Identity matrix Diagonal matrix Triangular matrix Symmetric or anti-symmetric matrix Definite matrix Orthogonal matrix 4. Operations...

following definition is very confusing: "For the purposes of this algorithm, a matrix is defined to be monotone if each row's minimum value occurs in a column...

Could someone check the result for the matrix exponential e t M = [ 2 e t − 2 t e 2 t − 2 t e 2 t 0 − 2 e t + 2 ( t + 1 ) e 2 t 2 ( t + 1 ) e 2 t 0 2 t...

wolfram.com/RegularMatrix.html) just redirects me to the entry for "Nonsingular Matrix", which gives credence to the equivalence of invertability and...

that isomorphism of vector bundles translates to Murray-von Neumann equivalence of the associated projection in K ⊗ C(X), where K is the compact operators...

multivariable calculus, the derivative at a point is not a number but a matrix or linear map. When dealing with manifolds, it's actually a linear map between...

19 May 2004 (UTC) Any objections to moving this page back to "Density matrix" where it belongs? --V79 16:35, 2005 Jun 15 (UTC) Done --V79 13:08, August...

Non-Sparse Matrix Determinant in Symbolic Computation, DETERMINANT APPROXIMATIONS reflection matrix, Rotation matrix, Vandermonde matrix, Circulant matrix, Hessian...

Star-mesh transform states: The equivalence follows from the Schur complement identity applied to the Kirchhoff matrix of the network. My visit here didn't...