jblog
toc

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.