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Henry Wolkowicz


University of Waterloo

Last seen: 10 jours il y a |  Actif depuis 2019

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Third-party toolbox cannot set a permanent path after MATLAB 2023b upgrade
I upgraded MATLAB to 2023b. I ran cvx_setup to install a third-party toolbox. User Account Control in Windows 11 does not allow ...

7 mois il y a | 2 réponses | 0

2

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Question


Restarting chol when the flag indicates it has stopped due to singularity
[R,flag]=chol(X) yields flag = 41, i.e. X is not positive definite after the 41st pivot. Can we remove row/col 41 and RE...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question


Has QR [Q,R,E]=qr(X,0) changed? licols for extracting lin indep cols is not working
I am using the downloaded code licols.m for extracting a lin indep set of columns from a matrix. It is based on the qr al...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question


Efficient V'*S*V matrix multiplication?
I have a matrix V with orthonormal columns, order n x k, and a symmetric, indefinite, matrix Z. Is there a lapack or blas rou...

presque 4 ans il y a | 1 réponse | 0

0

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eigenvalues of many dense symmetric real matrix that are 'close' to each other
I have to find the eigenvalues of many dense symmetric real matrix that are 'close' to each other, i.e. they are not much differ...

presque 5 ans il y a | 1 réponse | 0

0

réponse