Spherical Harmonics. I'd like to fully understand that sentence and what it means. It was originally implemented to enable spherical fourier neural operators.


Spherical Harmonics

The spherical harmonics are eigenfunctions of the angular part of the laplace operator, known to physicists as the angular momentum operator: Spherical harmonics are the spherical analogue of trigonometric polynomials on [−π, π) [ − π, π).

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