The Laplace kernel \(\psi\in L^2(\mathcal{SO}(3))\) is a radial symmetric kernel function which is defined by its Chebyshev series
\[ \psi(t) = \sum\limits_{n=0}^{\infty} \frac{(2n+1)}{4\,n^2\,(2n+2)^2} \, \mathcal U_{2n}(t) \].
Syntax
psi = SO3LaplaceKernel