Symmetric Real Spherical Harmonics
Andrzej Kudlicki, Maga Rowicka, Miroslaw Gilski, Zbyszek Otwinowski

Real spherical harmonics are a convenient base for representing electron density in:

• Rotational searches
• Building solvent masks
• EM 3D reconstruction
• Ab initio phasing

When symmetry is present, this description becomes redundant.

Here we present an algorithm for generating a reduced set of base functions for a given symmetry (crystallographic or not).

presentation

source code

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