# mathematica kronecker product

• ### KroneckerDelta—Wolfram Language Documentation

gives the Kronecker delta equal to 1 if all the are equal and 0 otherwise. Details KroneckerDelta 0 gives 1 KroneckerDelta n gives 0 for other numeric n .

• ### KroneckerProduct—Wolfram Language Documentation

Details. KroneckerProduct works on vectors matrices or in general full arrays of any depth. For matrices KroneckerProduct gives the matrix direct product. KroneckerProduct can be used on SparseArray objects returning a SparseArray object when possible. ».

• ### GitHubbernie-wu/BernDirac A Mathematica package for

2021-4-16 · The alias ⊗ for CircleTimes is used to denote the Kronecker product (sometimes also called Tensor product). Use escc esc to obtain the alias. Below we show that ⊗ works for multiple column vectors row vectors and square matrices. Column vector. Row vector. Square matrix. DiracForm DiracForm prints the vector or matrix using the

• ### GitHubbernie-wu/BernDirac A Mathematica package for

2021-4-16 · The alias ⊗ for CircleTimes is used to denote the Kronecker product (sometimes also called Tensor product). Use escc esc to obtain the alias. Below we show that ⊗ works for multiple column vectors row vectors and square matrices. Column vector. Row vector. Square matrix. DiracForm DiracForm prints the vector or matrix using the

• ### Distribution of Kronecker products of matrices

2020-10-13 · Kronecker product of more than two matricesj however for the work presented here it will be sufficient to define the Kronecker product of only two matrices. The Kronecker Portugaliae Mathematica 3 1-62. 1942. If a given matrix K is an exact Kronecker product with factors X and Y then all the characteristic roots of K can

• ### matricesEigenvectors of Kronecker ProductMathOverflow

2019-12-1 · Here A ⊗ B denotes the Kronecker Product of two matrices. I would like to know if this conjecture is true. Motivation I know that the following is true Theorem Let A and B be two complex square matrices. If λ is an eigenvalue of A with corresponding eigenvector x and μ is an eigenvector of B with corresponding eigenvector y then λ μ

• ### Matrix Operations—Wolfram Language Documentation

The Wolfram Language s matrix operations handle both numeric and symbolic matrices automatically accessing large numbers of highly efficient algorithms. The Wolfram Language uses state-of-the-art algorithms to work with both dense and sparse matrices and incorporates a number of powerful original algorithms especially for high-precision and symbolic matrices.

• ### Matlab kron_u010555688

2014-7-15 · MatlabkronKronecker . function K = kron (A B) KRON Kronecker tensor product. KRON (X Y) is the Kronecker tensor product of X and Y. The result is a large matrix formed by taking all possible products between the elements of X and

• ### Chapter 13 Kronecker ProductsSIAM

2006-10-27 · Kronecker Products 13.1 Deﬁnition and Examples Deﬁnition 13.1. Let A ∈ Rm n B ∈ Rp q. Then the Kronecker product (or tensor product) of A and B is deﬁned as the matrix A⊗B = a 11B ··· a 1nB.. a m1B ··· a mnB ∈ Rmp nq. (13.1) Obviously the same deﬁnition holds if A and B are complex-valued matrices. We

• ### OntheKroneckerProductMathematics

2013-8-1 · 2 The Kronecker Product The Kronecker product is deﬁned for two matrices of arbitrary size over any ring. However in the succeeding sections we consider only the ﬁelds of the real and complex numbers denoted by K= Ror C. Deﬁnition 2.1 The Kronecker product of the matrix A ∈ Mp q with the matrix B ∈ Mr s is deﬁned as A ⊗B =

• ### matricesEigenvalues and matrix kronecker product

2020-9-9 · I m not able to understand why this equivalences are true for the kronecker product of a matrix and why a the eigenvalues of a kronecker product of two matrixes are the product of their eigenvalues. The book goes like this

• ### BLOCKMATRIX Mathematica package to handle block matrix

Downloadable BlockMatrix.m provides the Kronecker product Vec operator Adjoin BlockDiagonal and BlockMatrix functions particularly useful in econometric applications of systems estimation. Unlike Outer which creates four-dimensional tensors KroneckerProduct produces the two-dimensional result expected in econometrics.

• ### TensorWedge ( TensorWedge )—Wolfram Language

Details. TensorWedge a b can be input as a b. The character is entered as t or TensorWedge . In a tensor wedge product of explicit or symbolic arrays all slots must have the same dimension though different arrays may have different ranks. TensorWedge generalizes Cross which requires vectors of

• ### Distribution of Kronecker products of matrices

2020-10-13 · Kronecker product of more than two matricesj however for the work presented here it will be sufficient to define the Kronecker product of only two matrices. The Kronecker Portugaliae Mathematica 3 1-62. 1942. If a given matrix K is an exact Kronecker product with factors X and Y then all the characteristic roots of K can

• ### The Kronecker Product A Product of the Times

2009-11-2 · The Kronecker Product B ⊗C is a block matrix whose ij-th block is bijC. E.g. b11 b12 b21 b22 ⊗C = b11C b12C b21C b22C Also called the "Direct Product" or the "Tensor Product"

• ### TensorProduct—Wolfram Language Documentation

TensorProduct tensor1 tensor2 represents the tensor product of the tensori.

• ### matrixKronecker productMathematica Stack Exchange

2016-6-21 · I have a problem I want to compute kronecker product as given below rho1 = MatrixForm KroneckerProduct 1 0 1 0 rho2 = MatrixForm KroneckerProduct 1 0 1 0 rho3 = MatrixForm KroneckerProduct 1 0 1 0

• ### KroneckerDelta—Wolfram Language Documentation

Details. KroneckerDelta 0 gives 1 KroneckerDelta n gives 0 for other numeric n. KroneckerDelta has attribute Orderless. An empty template can be entered as kd. Arguments in the subscript should be separated by commas. The comma can be made invisible by using the character InvisibleComma or .

• ### Matlab kron_u010555688

2014-7-15 · MatlabkronKronecker . function K = kron (A B) KRON Kronecker tensor product. KRON (X Y) is the Kronecker tensor product of X and Y. The result is a large matrix formed by taking all possible products between the elements of X and

• ### Kronecker Product Operator MathematicaBingweb

2017-10-3 · The Kronecker product should not be confused with the usual matrix multiplication which is an entirely different operation. The Kronecker product is named after Leopold Kronecker even though there is little evidence that he was the first to define and use it. Indeed in the past the Kronecker product was sometimes called the Zehfuss

• ### GitHubbernie-wu/BernDirac A Mathematica package for

2021-4-16 · The alias ⊗ for CircleTimes is used to denote the Kronecker product (sometimes also called Tensor product). Use escc esc to obtain the alias. Below we show that ⊗ works for multiple column vectors row vectors and square matrices. Column vector. Row vector. Square matrix. DiracForm DiracForm prints the vector or matrix using the

• ### linear algebraEfficient computation of kronecker

2021-3-15 · For double-precision vectors (single-precision and complex are similar) you can use the BLAS routine DGER (rank-one update) or similar to do the products one-at-a-time since they are all on vectors. How many vectors are you multiplying Remember that adding a bunch of vector outer products (which you can treat the Kronecker products as) ends up as a matrix-matrix multiplication which

• ### 221A Lecture NotesHitoshi Murayama

2014-1-31 · 3 Tensor Product The word "tensor product" refers to another way of constructing a big vector space out of two (or more) smaller vector spaces. You can see that the spirit of the word "tensor" is there. It is also called Kronecker product or direct product. 3.1 Space You start with two vector spaces V that is n-dimensional and W that

• ### TensorWedge ( TensorWedge )—Wolfram Language

TensorWedge a b can be input as a b. The character is entered as t or TensorWedge . In a tensor wedge product of explicit or symbolic arrays all slots must have the same dimension though different arrays may have different ranks. TensorWedge generalizes Cross which requires vectors of length . The TensorWedge product of several

• ### Kronecker Product Operator MathematicaBingweb

2017-10-3 · The Kronecker product should not be confused with the usual matrix multiplication which is an entirely different operation. The Kronecker product is named after Leopold Kronecker even though there is little evidence that he was the first to define and use it. Indeed in the past the Kronecker product was sometimes called the Zehfuss

• ### Kronecker Sum -- from Wolfram MathWorld

2021-7-19 · The Kronecker sum is the matrix sum defined by A direct sum B=A tensor I_b I_a tensor B (1) where A and B are square matrices of order a and b respectively I_n is the identity matrix of order n and tensor denotes the Kronecker product. For example the Kronecker sum of two 2 2 matrices (a)_(ij) and (b)_(ij) is given by a_(11) a_(12) a_(21) a_(22) direct sum b_(11) b_(12) b_(21) b_(22)

• ### matricesEigenvectors of Kronecker ProductMathOverflow

2019-12-1 · Here A ⊗ B denotes the Kronecker Product of two matrices. I would like to know if this conjecture is true. Motivation I know that the following is true Theorem Let A and B be two complex square matrices. If λ is an eigenvalue of A with corresponding eigenvector x and μ is an eigenvector of B with corresponding eigenvector y then λ μ

• ### Chapter 13 Kronecker ProductsSIAM

2006-10-27 · Kronecker Products 13.1 Deﬁnition and Examples Deﬁnition 13.1. Let A ∈ Rm n B ∈ Rp q. Then the Kronecker product (or tensor product) of A and B is deﬁned as the matrix A⊗B = a 11B ··· a 1nB.. a m1B ··· a mnB ∈ Rmp nq. (13.1) Obviously the same deﬁnition holds if A and B are complex-valued matrices. We

• ### GitHubbernie-wu/BernDirac A Mathematica package for

2021-4-16 · The alias ⊗ for CircleTimes is used to denote the Kronecker product (sometimes also called Tensor product). Use escc esc to obtain the alias. Below we show that ⊗ works for multiple column vectors row vectors and square matrices. Column vector. Row vector. Square matrix. DiracForm DiracForm prints the vector or matrix using the

• ### Kronecker Product with Mathematica

2000-10-30 · Kronecker Product with Mathematica N icholas Wheeler R eed College Physics Department October 2000 Introduction In several recent essays I have drawn extensively on properties of the Kronecker product —a concept not treated in most standard introductions to matrix theory. It

• ### How to get the result of a multiplication between a matrix

Frank makes an important point. In Mathematica the dot operator is overloaded and can be matrix multiplication matrix-vector multiplication vector-matrix multiplication or the scalar dot product of vectors depending on context. If possible Mathematica also conforms the vectors as needed.

• ### mathematicsIs kronecker product identifiable Quantum

2020-3-11 · U2 Ψ2 = eiθ2 Ψ2 . with θ = θ1 θ2 2kπ. The implication seems "logical" as we just separate 2 non-related quantum states from each other but I do not have enough confidence in my reasoning to accept this result yet. I searched for a mathematical proof but the closer I found is the following theorem from here

• ### XFT2D A 2D Fast Fourier TransformWolfram

The XFT is given by the product where is a diagonal matrix with diagonal element given by is the standard discrete Fourier transform and . The XFT2D can be defined by the Kronecker product . The XFT is computed with and points in the and directions respectively. The XFT is as fast as the FFT algorithm used to compute the discrete

• ### OntheKroneckerProductMathematics

2013-8-1 · 2 The Kronecker Product The Kronecker product is deﬁned for two matrices of arbitrary size over any ring. However in the succeeding sections we consider only the ﬁelds of the real and complex numbers denoted by K= Ror C. Deﬁnition 2.1 The Kronecker product of the matrix A ∈ Mp q with the matrix B ∈ Mr s is deﬁned as A ⊗B =

• ### Library for calculating determinants with Kronecker products

2015-1-28 · I need to calculate a determinant consisting of vectors using the Kronecker product as product. As an example I would need to be able to calculate left begin array cc left(begin array c

• ### linear algebraTrace of Product of Kronecker Products

2021-6-8 · Browse other questions tagged linear-algebra matrices kronecker-product or ask your own question. Featured on Meta New VP of Community plus two more community managers

• ### Kronecker productRosetta Code

2021-6-24 ·  Defines a function to calculate the Kronecker product of two rectangular matrices and tests it with two examples. / public class Product / Find the Kronecker product of the arguments. param a The first matrix to multiply. param b The second matrix to multiply. return A new matrix the Kronecker product of the arguments. /

• ### Kronecker productRosetta Code

2021-6-24 ·  Defines a function to calculate the Kronecker product of two rectangular matrices and tests it with two examples. / public class Product / Find the Kronecker product of the arguments. param a The first matrix to multiply. param b The second matrix to multiply. return A new matrix the Kronecker product of the arguments. /

• ### Library for calculating determinants with Kronecker products

2015-1-28 · I need to calculate a determinant consisting of vectors using the Kronecker product as product. As an example I would need to be able to calculate left begin array cc left(begin array c

• ### TensorWedge ( TensorWedge )—Wolfram Language

TensorWedge a b can be input as a b. The character is entered as t or TensorWedge . In a tensor wedge product of explicit or symbolic arrays all slots must have the same dimension though different arrays may have different ranks. TensorWedge generalizes Cross which requires vectors of length . The TensorWedge product of several

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