Wolfram Mathematica

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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…

Nasser

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…

Shamina

9:19 PM

Q: Speeding up Fourier transform and eigenvector calculation

I 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...