wigcpp is a clebsch-gordan coefficient and wigner-3, 6 9j symbol calculation library
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Updated
Jul 6, 2026 - C++
wigcpp is a clebsch-gordan coefficient and wigner-3, 6 9j symbol calculation library
A port of Fortran code that calculates Clebsch-Gordan coefficients
A five-lecture course building an SO(3)-equivariant neural network from first principles—rotation symmetry, irreducible representations, Clebsch–Gordan couplings. NumPy and SymPy only, no deep-learning framework. Notes, runnable notebooks and solutions, released weekly.
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