Before:
The alphabet variables $x_1,\ldots,x_n$ may be regarded as the eigenvalues of a real symmetric matrix. The notation $C_\lambda$ here agrees with $Z_\lambda$ in CITE{DLMF}; SageMath calls the monic Jack $P$ specialization at parameter $2$ its zonal basis CITE{SageJack}, which generally has a different scalar normalization.

After:
The alphabet variables $x_1,\ldots,x_n$ may be regarded as the eigenvalues of a real symmetric matrix. The notation $C_\lambda$ here agrees with $Z_\lambda$ in CITE{DLMF}; SageMath calls the monic HREF{T575}[Jack $P$] specialization at parameter $2$ its zonal basis CITE{SageJack}, which generally has a different scalar normalization.
