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# Spherical harmonics

[Spherical harmonics](https://en.wikipedia.org/wiki/Spherical_harmonics) provide functionality to obtain mathematical expressions for 3-dimensional objects.

Topics:
* [Mathematical basics I](glossary:spherical_harmonics:mathematical_basics)
* [Mathematical basics II](glossary:spherical_harmonics:mathematical_basics2)
* [Usage from code](glossary:spherical_harmonics:code)
* [Interactive usage](glossary:spherical_harmonics:interactive)