Snippet #1

2018-07-14, post № 200

mathematics, #analysis, #formal calculation, #symbolic

$\nabla=\frac{\Delta}{\nabla}$

Since $\Delta v=\langle\nabla,\nabla v\rangle=\nabla\cdot\nabla v=\nabla^2v$ and thus $\Delta=\nabla^2$ is common abuse of notation, I propose this formal identity.