w6j_special

w6j_special(*args, sqrt=np.sqrt)

Wigner-6j coefficient from analytical expressions.

args has the form: (j1, j2, j3, j4, j5, j6), which correspond to the following Wigner-6j coefficient:

\[\begin{split}\begin{Bmatrix} j_1 & j_2 & j_3\\ j_4 & j_5 & j_6 \end{Bmatrix}\end{split}\]