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dtn
5:24 AM
@b3m2a1 This is a purely mathematical problem, not taken from physics. I carefully looked through the algorithm, trying to find some clues, and also looked for them in alternative algorithms - this problem is not solved, but intuition tells the area in which to look for the answer.
 
dtn
5:58 AM
How can I convert the sum of the elements a+b+c to a vector {a,b,c}?
 
dtn
6:12 AM
Level command
 
 
11 hours later…
5:19 PM
@dtn  "How can I convert the sum of the elements a+b+c to a vector {a,b,c}?"  May be change the head?

          sum = a + b + c;  List @@ sum;

gives {a, b, c}
 
 
4 hours later…
9:19 PM
1
Q: Speeding up Fourier transform and eigenvector calculation

ShaminaI have a matrix $M$ in Bloch basis (momentum space). Then I have to take Fourier transform of $M$ to go to real space. The size of this lattice in real space can be fixed to some value $N_{unit}$. Furthermore, I have to determine the eigenvectors of this real space matrix and study dynamics so it...

Please help me on this question. Thanks a lot in advance!
 

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