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adam W's user avatar
adam W's user avatar
adam W's user avatar
adam W
  • Member for 11 years, 9 months
  • Last seen more than a week ago
3 votes

Radical questions algebra

3 votes

Vandermonde Determinant

3 votes

Optimal symmetric rank-1 approximation

3 votes

How to randomly construct a square full-ranked matrix with low determinant?

3 votes
Accepted

Possible change of rank of a Gram matrix

3 votes

How to programmatically find the inverse of a 2x2 matrix (mod 26).

3 votes
Accepted

Uniqueness of matrix decomposition

3 votes

represent the matrix into rank 2

3 votes
Accepted

Matrix Determinant Identity

3 votes
Accepted

QR decomposition and the fundamental subspaces

3 votes

Matrices with columns which are eigenvectors

3 votes
Accepted

Given the inverse of a block matrix - Complete problem

2 votes

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

2 votes
Accepted

Linear Feedback Shift Register over $\mathbb F_q$

2 votes
Accepted

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

2 votes
Accepted

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

2 votes
Accepted

Matrix decomposition into two arbitrary sized matrices

2 votes
Accepted

Static Arithmetic Encoding/Adaptive Arithmetic Encoding Algorithm

2 votes

Finding determinant of matrix without expanding

2 votes
Accepted

$P_{1c} = AP$ , $P_{2c} = BP$. How to find $P$? (being that $A$ and $B$ are $3\times 4$ matrices and $P$ is a $4\times 1$ vector)

2 votes
Accepted

What happens when the basis vectors of an integer lattice are not linearly independent?

2 votes

A matrix algebra question

2 votes
Accepted

Least-squares solution to an over-defined probem.

2 votes
Accepted

Symmetric matrix decomposition with orthonormal basis of non-eigenvectors

2 votes
Accepted

Local axis follows origin node rotation

2 votes

If $x\perp \mathrm{span}\{r_1,\dots,r_p\}$, can we prove $x\notin\mathrm{span}\{v_1,\dots,v_p\}$?

2 votes
Accepted

Find point $X$ such that line through plane $E$ and sphere $S$ meet at $(0,0,1)$ (stereographic projection)

2 votes

What can be said about the minimizer of $\| b - A x \| ^2+ \| x \|^2$?

2 votes
Accepted

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

2 votes
Accepted

Possible relation between spectra bounds of two matrices