## 46 clebsch_gordan

### 46.1 Functions and Variables for clebsch_gordan

Function: clebsch_gordan (j1, j2, m1, m2, j, m)

  Compute the Clebsch-Gordan coefficient `<j1, j2, m1, m2 | j, m>`.

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  Categories: clebsch_gordan

Function: racah_v (a, b, c, a1, b1, c1)

  Compute Racah’s V coefficient (computed in terms of a related Clebsch-Gordan coefficient).

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  Categories: clebsch_gordan

Function: racah_w (j1, j2, j5, j4, j3, j6)

  Compute Racah’s W coefficient (computed in terms of a Wigner `6j` symbol)

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  Categories: clebsch_gordan

Function: wigner_3j (j1, j2, j3, m1, m2, m3)

  Compute Wigner’s `3j` symbol (computed in terms of a related Clebsch-Gordan coefficient).

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  Categories: clebsch_gordan

Function: wigner_6j (j1, j2, j3, j4, j5, j6)

  Compute Wigner’s `6j` symbol.

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  Categories: clebsch_gordan

Function: wigner_9j (a, b, c, d, e, f, g, h, i, j,)

  Compute Wigner’s `9j` symbol.

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  Categories: clebsch_gordan