User adam W

28 votes

Why not write $\sqrt{3}2$?

answered Oct 12, 2012 at 15:14

21 votes

Accepted

Determinant of rank-one perturbations of (invertible) matrices

answered Oct 24, 2012 at 0:50

15 votes

Accepted

Insightful proofs for Sherman-Morrison Formula and Matrix Determinant Lemma

answered Dec 16, 2012 at 19:20

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

9 votes

What is step by step logic of pinv (pseudoinverse)?

answered Feb 28, 2013 at 18:03

9 votes

Accepted

Can a symmetric matrix always be represented as the sum of a positive-definite and negative-definite matrix?

answered Jan 10, 2013 at 19:41

9 votes

Are there any decompositions of a symmetric matrix that allow for the inversion of any submatrix?

answered Oct 6, 2012 at 1:06

8 votes

Mathematical expression to form a vector from diagonal elements

answered Oct 12, 2014 at 16:15

6 votes

Are there any memorization techniques that exist for math students?

answered Oct 13, 2012 at 1:59

6 votes

QR factorization of complex matrix

answered Mar 15, 2013 at 19:37

6 votes

Accepted

QR factorization for ridge regression

answered Feb 10, 2013 at 17:25

5 votes

Accepted

Solve the integral

answered Jan 30, 2013 at 5:04

5 votes

Accepted

Can this transformation be expressed as a matrix equation?

answered Mar 17, 2013 at 15:35

5 votes

$QR$ decomposition of rectangular block matrix

answered Nov 11, 2013 at 4:51

5 votes

How can we compute Pseudoinverse for any Matrix

answered Aug 12, 2013 at 21:41

4 votes

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

answered Apr 6, 2013 at 14:53

4 votes

Finding a vector orthogonal to a subspace

answered Mar 21, 2013 at 16:29

4 votes

Accepted

Row and column algorithm

answered Feb 26, 2013 at 16:15

4 votes

Does $Ax=x$ imply $A^* x=x$, if $A^*$ is the conjugate transpose of $A$?

answered Feb 10, 2013 at 16:59

4 votes

Are there any memorization techniques that exist for math students?

answered Oct 13, 2012 at 3:33

4 votes

Accepted

Can an if and only if condition be stated alternatively?

answered Oct 5, 2012 at 4:23

4 votes

Solving matrix equation $XA=AY$ with known $X$ and $Y$

answered Jan 11, 2013 at 15:27

4 votes

The Matrix Equation $X^{2}=C$

answered Jan 13, 2013 at 18:14

4 votes

Accepted

Is there a unique solution for this quadratic matrix equation?

answered Jan 23, 2013 at 6:26

4 votes

Accepted

Solving for the trace of a matrix

answered Nov 29, 2012 at 3:11

3 votes

Accepted

Linear Algebra (Orthogonal Transformations)

answered Nov 28, 2012 at 16:24

3 votes

Is the product of two positive semidefinite matrices positive semidefinite?

answered Oct 28, 2012 at 2:21

3 votes

Determinant of the sum of matrices: $\det (A + B^T) = \det(A^T + B)$

answered Oct 28, 2012 at 23:50

3 votes

Radical questions algebra

answered Jan 17, 2013 at 3:44

3 votes

Matrices with columns which are eigenvectors

answered Jan 13, 2013 at 16:27

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146 Answers

Why not write $\sqrt{3}2$?

Determinant of rank-one perturbations of (invertible) matrices

Insightful proofs for Sherman-Morrison Formula and Matrix Determinant Lemma

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

What is step by step logic of pinv (pseudoinverse)?

Can a symmetric matrix always be represented as the sum of a positive-definite and negative-definite matrix?

Are there any decompositions of a symmetric matrix that allow for the inversion of any submatrix?

Mathematical expression to form a vector from diagonal elements

Are there any memorization techniques that exist for math students?

QR factorization of complex matrix

QR factorization for ridge regression

Solve the integral

Can this transformation be expressed as a matrix equation?

$QR$ decomposition of rectangular block matrix

How can we compute Pseudoinverse for any Matrix

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

Finding a vector orthogonal to a subspace

Row and column algorithm

Does $Ax=x$ imply $A^* x=x$, if $A^*$ is the conjugate transpose of $A$?

Are there any memorization techniques that exist for math students?

Can an if and only if condition be stated alternatively?

Solving matrix equation $XA=AY$ with known $X$ and $Y$

The Matrix Equation $X^{2}=C$

Is there a unique solution for this quadratic matrix equation?

Solving for the trace of a matrix

Linear Algebra (Orthogonal Transformations)

Is the product of two positive semidefinite matrices positive semidefinite?

Determinant of the sum of matrices: $\det (A + B^T) = \det(A^T + B)$

Radical questions algebra

Matrices with columns which are eigenvectors