Laplace-Beltrami on the sphere

I what to solve the laplacian-beltrami equation on the sphere. However, I didn’t find any relevant working example on the net, could someone provide me one ?

Have you considered this thesis?

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I didn’t looked at it before, thank you !
However, no code is provided, do you know if there’s a github or a page where he provided the codes ?
Thank’s !

I do not know where they have published the code for this.
However, consider either contacting the author of the thesis, or the supervisor listed here.