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Rodrigo de Azevedo's user avatar
Rodrigo de Azevedo's user avatar
Rodrigo de Azevedo's user avatar
Rodrigo de Azevedo
  • Member for 8 years, 7 months
  • Last seen this week
  • Europe
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revised
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
added 41 characters in body
comment
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
In general, ${\bf X}^+ {\bf X} \neq {\bf I}$. Perform some experiments with MATLAB using pinv
revised
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
added 4 characters in body
revised
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
edited body
comment
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
Is $\bf X$ even square?
revised
Symmetric linear least-squares solution ${\bf X} {\bf A} = {\bf B}$
added 69 characters in body
awarded
 Revival
revised
Measuring the "distance" of a matrix from a diagonal matrix
edited title
comment
Expectation of the operator norm of projection of a random permutation matrix
What exactly is $\|\|V^\top PV\|\|_2$?
comment
Expectation of the operator norm of projection of a random permutation matrix
Is that the spectral norm?
revised
Expectation of the operator norm of projection of a random permutation matrix
edited tags
revised
How to turn $\{-1, 0, 1\}$-valued optimization problem into integer program?
edited tags
revised
How to turn $\{-1, 0, 1\}$-valued optimization problem into integer program?
added 12 characters in body
revised
Spectrum of Moore-Penrose pseudo-inverse multiplied by a constant
edited tags
revised
Orthogonal basis of ${\bf Sym}_n(\mathbb R)$, made of orthogonal matrices
edited tags
reviewed
Approve
Differentiability of the Moreau envelope
comment
Equivalence of bounded gradient flow solutions and uniformly bounded gradient descent trajectories for definable functions
When you quote someone's work, please consider using >
revised
Proving the set $\left\lbrace \frac{(x + y)^2}{\sqrt{y}} \leq x - y + 5, y > 0 \right\rbrace$ is convex
added 46 characters in body
revised
Differentiability of the Moreau envelope
edited tags; edited title
revised
A mutation of the Collatz disease
added 7 characters in body
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