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How to apply permutation vector r=symrcm(K) to list of finite elements?
Hi there, I have a stiffness matrix K for a 3D FEM problem. In order to improve its sparsity pattern, I have applied the Cuth...
12 years ago | 1 answer | 0
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answerQuestion
Symmetric, positive-semidefinite matrix has (big) negative eigenvalues
Hi there, when I run the following code: whos J; JProd = (J.'*J); whos JProd; eigenVals = eig(JProd); min(ei...
12 years ago | 1 answer | 0
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Why does comparing identical doubles result in a logical 0?
Hi there, I have the problem that the comparison of doubles which I have exported from another software (COMSOL Multiphysics)...
13 years ago | 3 answers | 0
