Gabriel Peyré on X: "Spherical harmonics is an orthogonal basis of eigenvectors of the Laplacian on the sphere. Eigenspaces of fixed frequency are rotation invariant. The basic tool to perform linear and
Real part of a set of spherical harmonics mapped to the surface of a... | Download Scientific Diagram
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quantum mechanics - Why is the square of the magnitude of a spherical harmonic function related to the zenith angle $θ$? - Physics Stack Exchange
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