Kernel::CompareX_3
SphericalKernel::CompareY_3
SphericalKernel::CompareZ_3
SphericalKernel::CompareXY_3
SphericalKernel::CompareXYZ_3
SphericalKernel::CompareTheta_3
SphericalKernel::CompareThetaZ_3
SphericalKernel::Equal_3
An object of this type must provide in addition:
p
q