deletions | additions       diff --git a/Summary.tex b/Summary.tex  index d8ca59c..42d1635 100644  --- a/Summary.tex  +++ b/Summary.tex 
...
\nabla^2_{scalar} = \nabla\cdot\nabla =\partial_x^2 + \partial_y^2 + \partial_z^2 = \frac{1}{3}Tr(\nabla^2) \\\\  \nabla^4 \nabla^4_{scalar} = (\partial_x^2 + \partial_y^2 + \partial_z^2)^2  \\\\ \nabla^T\nabla=\partial_x^2\partial_y^2\partial_z^2( \partial_x^2 + \partial_y^2 + \partial_z^2 ) \\\\