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Ziwen Gu


Last seen: 2개월 전 |  2023년부터 활동

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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...

7개월 전 | 답변 수: 1 | 0

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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...

9개월 전 | 답변 수: 0 | 0

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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 ...

9개월 전 | 답변 수: 2 | 0

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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...

9개월 전 | 답변 수: 2 | 0

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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...

대략 1년 전 | 답변 수: 3 | 0

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