球面谐和函数的新加法公式

New Addition Formulae of Spherical Harmonic Function

本文给出了球面谐和函数Y_(lm)(?)的另一种加法公式,用它可以把Y_(lm)(?)用Y_(lm)(?)与Y_(lm)(?)来展开,其中矢量(?)=(?)+(?),而(?)表示矢量(?)的方位角。

Some new addition formulae of spherical harmonic functions are given. Using these formulae, Y_(lm)((?)) can be expanded by Y_(lm)((?)) and Y_(lm)((?)), where vector (?)=(?)+(?) and (?) is thc azimuthal angle of vector (?).