S2FFT is a Python package for computing Fourier transforms on the sphere and rotation group (Price & McEwen 2024) using JAX or PyTorch. It leverages autodiff to provide differentiable transforms, ...
The canonical spherical harmonics $Y_{lm}$ subject to a rotation in $\mathbb{R}^{3}$ will always mix among each other. As such, we can represent the act of rotating ...