Dear all,

Is there any one to know how we can use one element of matrix? For example
we have matrix A as follows:

A=[2 4;6,0]

We have A matrix with dimension 2*2. If  we want to use one element of
matrix such as A(2,1), (that is number 6 in the matrix), How we can write
in kwant? Any help appreciate.

Best,
Nafise

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