User adam W

0 votes

Checking whether any row combinations of a tall rectangular matrix are linearly independent

answered Oct 25, 2022 at 15:19

-1 votes

Find all $\mathbb{Q}$-linear maps $\phi : \mathbb{Q}[x]\to\mathbb{Q}[x]$ that send irreducible polynomials to irreducible polynomials

answered Oct 20, 2022 at 3:28

9 votes

Mathematical expression to form a vector from diagonal elements

answered Oct 12, 2014 at 16:15

0 votes

Accepted

Method of orthogonalization that preserves invertibility

answered Jul 28, 2014 at 16:49

1 vote

$\Delta^d m^n =d! \sum_{k} \left[ m \atop k \right] { {k+n} \brace m + d}(-1)^{m+k}$ Is this a new formula?

answered Mar 28, 2014 at 20:08

0 votes

Concrete Mathematics, Newton Series and Inversion

answered Mar 14, 2014 at 19:13

0 votes

Common Factor in Matrices?

answered Feb 10, 2014 at 21:36

1 vote

Accepted

SVD for a matrix with a given orthonormal $\mathbf{U}$

answered Feb 8, 2014 at 1:12

1 vote

Necessary conditions for a matrix to have orthonormal eigenvectors?

answered Feb 8, 2014 at 0:07

3 votes

Accepted

Given the inverse of a block matrix - Complete problem

answered Dec 23, 2013 at 19:04

1 vote

Known probability for one month, what is the probability for 100 months?

answered Nov 26, 2013 at 2:27

2 votes

Accepted

Linear Feedback Shift Register over $\mathbb F_q$

answered Nov 25, 2013 at 5:40

12 votes

Accepted

Is there a function that gives the same result for a number and its reciprocal?

answered Nov 25, 2013 at 4:55

2 votes

Suppose $AB=I$, where A has full rank. Is $BA=I$?

answered Nov 24, 2013 at 18:37

1 vote

Relation between Eigenvalues of a given matrix and another set of rank-one matrices.

answered Nov 24, 2013 at 18:31

2 votes

Finding determinant of matrix without expanding

answered Nov 23, 2013 at 17:42

5 votes

$QR$ decomposition of rectangular block matrix

answered Nov 11, 2013 at 4:51

1 vote

Odd or even row dot product based on order of Matrix

answered Nov 8, 2013 at 16:46

1 vote

the determinant of the adjugate matrix removing the last line and the last column

answered Oct 29, 2013 at 21:27

5 votes

How can we compute Pseudoinverse for any Matrix

answered Aug 12, 2013 at 21:41

1 vote

Accepted

Is there a quick way to compute the matrix whose column space is the basis of the null space of another matrix?

answered Jun 15, 2013 at 3:57

1 vote

Overdetermined linear system

answered Apr 11, 2013 at 12:14

2 votes

Accepted

Static Arithmetic Encoding/Adaptive Arithmetic Encoding Algorithm

answered Apr 7, 2013 at 18:18

4 votes

Solution of a Sylvester equation?

answered Apr 7, 2013 at 14:13

4 votes

Solve the matrix equation : $A = X (X B)^T$

answered Apr 6, 2013 at 14:53

2 votes

Accepted

Cholesky decomposition given an initial factorization $RR^{T}$

answered Apr 6, 2013 at 4:12

1 vote

Proof of a Determinant Identity

answered Apr 3, 2013 at 15:17

1 vote

Eigenvalues of anti-triangular block matrix

answered Mar 29, 2013 at 15:11

2 votes

Accepted

Matrix decomposition into two arbitrary sized matrices

answered Mar 28, 2013 at 2:47

2 votes

Accepted

Eigenvalues of a matrix with only one non-zero row and non-zero column.

answered Mar 27, 2013 at 18:48

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146 Answers

Checking whether any row combinations of a tall rectangular matrix are linearly independent

Find all $\mathbb{Q}$-linear maps $\phi : \mathbb{Q}[x]\to\mathbb{Q}[x]$ that send irreducible polynomials to irreducible polynomials

Mathematical expression to form a vector from diagonal elements

Method of orthogonalization that preserves invertibility

$\Delta^d m^n =d! \sum_{k} \left[ m \atop k \right] { {k+n} \brace m + d}(-1)^{m+k}$ Is this a new formula?

Concrete Mathematics, Newton Series and Inversion

Common Factor in Matrices?

SVD for a matrix with a given orthonormal $\mathbf{U}$

Necessary conditions for a matrix to have orthonormal eigenvectors?

Given the inverse of a block matrix - Complete problem

Known probability for one month, what is the probability for 100 months?

Linear Feedback Shift Register over $\mathbb F_q$

Is there a function that gives the same result for a number and its reciprocal?

Suppose $AB=I$, where A has full rank. Is $BA=I$?

Relation between Eigenvalues of a given matrix and another set of rank-one matrices.

Finding determinant of matrix without expanding

$QR$ decomposition of rectangular block matrix

Odd or even row dot product based on order of Matrix

the determinant of the adjugate matrix removing the last line and the last column

How can we compute Pseudoinverse for any Matrix

Is there a quick way to compute the matrix whose column space is the basis of the null space of another matrix?

Overdetermined linear system

Static Arithmetic Encoding/Adaptive Arithmetic Encoding Algorithm

Solution of a Sylvester equation?

Solve the matrix equation : $A = X (X B)^T$

Cholesky decomposition given an initial factorization $RR^{T}$

Proof of a Determinant Identity

Eigenvalues of anti-triangular block matrix

Matrix decomposition into two arbitrary sized matrices

Eigenvalues of a matrix with only one non-zero row and non-zero column.