User adam W

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Given the product of a unitary matrix and an orthogonal matrix, can it be easily inverted _without_ knowing these factors?

answered Mar 8, 2013 at 16:25

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How can I use Gauss elimination to solve equations with Modular arithmetics?

answered Oct 13, 2012 at 2:26

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From right-eigenvectors to left-eigenvectors?

answered Oct 21, 2012 at 18:50

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Possible relation between spectra bounds of two matrices

answered Oct 12, 2012 at 19:56

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I can express this programmatically, how would this be expressed mathematically?

answered Oct 5, 2012 at 2:29

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Checking a solution for a linear system

answered Oct 4, 2012 at 19:58

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Short-cut solution for generalized eigenvectors

answered Oct 3, 2012 at 14:23

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Can this matrix equation be solved for X?

answered Oct 4, 2012 at 0:49

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System of equations: Can I solve this system of equations?

answered Oct 4, 2012 at 1:01

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Proof of a fact about symmetric pd matrices

answered Jan 18, 2013 at 13:52

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Symmetric matrix decomposition with orthonormal basis of non-eigenvectors

answered Mar 24, 2013 at 21:13

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Cosine similarity between complex vectors

answered Jan 9, 2013 at 15:40

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Quadratic equation with matricial coefficients

answered Jan 8, 2013 at 15:46

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Characteristic polynomial of a matrix with zeros on its diagonal

answered Dec 22, 2012 at 20:48

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Finding common terms of two arithmetic sequences using Extended Euclidean algorithm

answered Nov 5, 2012 at 16:19

1 vote

Spectral/Eigen-value solution?

answered Nov 8, 2012 at 14:00

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trace function, eigen decomposition and optimization!

answered Nov 9, 2012 at 1:52

1 vote

Properties of the unit normal to a partially-rotated hyperplane

answered Nov 17, 2012 at 21:52

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2-rank of symmetric matrix

answered Dec 5, 2012 at 21:41

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Quadratic Matrix Equation

answered Oct 25, 2012 at 13:45

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Compute Cholesky of $\Sigma^{-1}$ from Cholesky of $\Sigma$

answered Oct 28, 2012 at 3:12

1 vote

Complete instead of Complex, Irregular instead of Imaginary

answered Dec 28, 2012 at 19:44

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Is $"2.1234........ "$ rational?

answered Jan 4, 2013 at 5:20

1 vote

proving the formula for x and y in the extended euclidean algorithm

answered Jan 8, 2013 at 18:03

1 vote

Matrix polynomial - is there a trick?

answered Jan 18, 2013 at 17:52

1 vote

Linear algebra "give vector in opposite direction to V with length 1"

answered Jan 12, 2013 at 15:11

1 vote

A set of Quadratic equation, any good algorithm?

answered Jan 17, 2013 at 16:03

1 vote

Probability problem found in textbook

answered Jan 17, 2013 at 22:40

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Describe all solutions of the linear system system

answered Oct 4, 2012 at 21:36

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How to check if a symmetric $4\times4$ matrix is positive semidefinite?

answered Oct 11, 2012 at 12:09

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146 Answers

Given the product of a unitary matrix and an orthogonal matrix, can it be easily inverted _without_ knowing these factors?

How can I use Gauss elimination to solve equations with Modular arithmetics?

From right-eigenvectors to left-eigenvectors?

Possible relation between spectra bounds of two matrices

I can express this programmatically, how would this be expressed mathematically?

Checking a solution for a linear system

Short-cut solution for generalized eigenvectors

Can this matrix equation be solved for X?

System of equations: Can I solve this system of equations?

Proof of a fact about symmetric pd matrices

Symmetric matrix decomposition with orthonormal basis of non-eigenvectors

Cosine similarity between complex vectors

Quadratic equation with matricial coefficients

Characteristic polynomial of a matrix with zeros on its diagonal

Finding common terms of two arithmetic sequences using Extended Euclidean algorithm

Spectral/Eigen-value solution?

trace function, eigen decomposition and optimization!

Properties of the unit normal to a partially-rotated hyperplane

2-rank of symmetric matrix

Quadratic Matrix Equation

Compute Cholesky of $\Sigma^{-1}$ from Cholesky of $\Sigma$

Complete instead of Complex, Irregular instead of Imaginary

Is $"2.1234........ "$ rational?

proving the formula for x and y in the extended euclidean algorithm

Matrix polynomial - is there a trick?

Linear algebra "give vector in opposite direction to V with length 1"

A set of Quadratic equation, any good algorithm?

Probability problem found in textbook

Describe all solutions of the linear system system

How to check if a symmetric $4\times4$ matrix is positive semidefinite?