# Tag Info

Accepted

### Efficient computation of a matrix times its transpose

Edit and Warning: I noticed that my timing may not have been quite correct, or at least has to be interpreted carefully, please see the edit. As @Roman points out, one should check if one really has ...
Accepted

### VectorAround problem

Its hard to say if this answers it for you since it seems to be version dependent and my current 12.3 runs error free. But i had these error often before. It got better in 13.1. for me. Essentially ...
Accepted

### Proof of symbolic matrix

TensorExpand[ f[G, H] == Subscript[k, 1]*f[A, H] + Subscript[k, 2]*f[B, H]] (* True *)
Accepted

### Calculating power series of quantum operators on kets

The reason is simple: this package uses CenterDot as multiplication, while Series of Exp ...
Accepted

### Calculating the matrix product of the elements of a table

The For-loop given by OP can be replaced by Map as follows: ...
Accepted

### Minimize Sum of Hamming Distances

Keep agreement[] from evaluating on symbolic y with the _?... pattern tests. Also total up ...
Accepted

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### Converting a list of values to a criterion

If instead of a selector list that was integers you had a selector list that was named patterns, it would work very easily. So, given, ...

### How to solve this equation with rank relation of matrix

I have made a MatrixRankSym feature with symbolic computation here. And we can use it directly: For your first equation: ...

### How to solve this matrix equation

I have made a MatrixRankSym feature with symbolic computation here. And we can use for this question directly: ...

### Manipulating a Haar random unitary matrix and computing probabilities

Code to calculate the probabilities when $U$ is a $2^n \times 2^n$ unitary matrix: ...