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Ziwen Gu


Last seen: 6 mois il y a |  Actif depuis 2023

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Solving the arising equation with preconditioned iteration method.
I want to use preconditioned iteration method, like pcg or gmres, to solve . In each iteration, it has to solve some additional...

11 mois il y a | 1 réponse | 0

1

réponse

Question


Complexity order of fft in matlab
Hello everyone, I want to check the complecity order of fft is O(N*log(N) in matlab, so I ran the code below: The expected ra...

environ un an il y a | 1 réponse | 0

0

réponse

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Quick method in solving symmetric linear equation
In simulation of PDE, I have to solve a linear equation: Ax = b for many times( with different b, iteratively ) . The matrix A ...

environ un an il y a | 2 réponses | 0

2

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Question


Use sky colormap in old Matlab version
Hello everyone, I want to use colormap "sky" released in Matlab , but my Matlab is an older version. Can someone help give me t...

environ un an il y a | 2 réponses | 0

2

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Question


A unknown bug on matrix
Follow the fig, R and S are matrix of size(4225*4225), delta, sigma,delta_gamma are scale parameter. When they minus, the siz...

plus d'un an il y a | 3 réponses | 0

3

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