\[\left(\wp\left(v\right)-\wp\left(w\right)\right)\left(\wp\left(w\right)-\wp%
\left(u\right)\right)\left(\wp\left(u\right)-\wp\left(v\right)\right)\nabla^{2%
}=\left(\wp\left(w\right)-\wp\left(v\right)\right)\frac{{\partial}^{2}}{{%
\partial u}^{2}}+\left(\wp\left(u\right)-\wp\left(w\right)\right)\frac{{%
\partial}^{2}}{{\partial v}^{2}}+\left(\wp\left(v\right)-\wp\left(u\right)%
\right)\frac{{\partial}^{2}}{{\partial w}^{2}}.\]