L=mr˙22−V(r){\displaystyle L={\frac {m{\dot {r}}^{2}}{2}}-V\left(r\right)}
H=(px2+py2+pz2)2m+V(x,y,z){\displaystyle H={\frac {\left(p_{x}^{2}+p_{y}^{2}+p_{z}^{2}\right)}{2m}}+V\left(x,y,z\right)}
H=(pρ2+pθ2ρ2+pz2)2m+V(ρ,θ,z){\displaystyle H={\frac {\left(p_{\rho }^{2}+{\frac {p_{\theta }^{2}}{\rho ^{2}}}+p_{z}^{2}\right)}{2m}}+V\left(\rho ,\theta ,z\right)}
H=(pr2+pθ2r2+pφ2r2sin2(θ))2m+V(ρ,θ,φ){\displaystyle H={\frac {\left(p_{r}^{2}+{\frac {p_{\theta }^{2}}{r^{2}}}+{\frac {p_{\varphi }^{2}}{r^{2}\sin ^{2}(\theta )}}\right)}{2m}}+V\left(\rho ,\theta ,\varphi \right)}