deletions | additions       diff --git a/Summary.tex b/Summary.tex  index 477b2e7..575cadf 100644  --- a/Summary.tex  +++ b/Summary.tex 
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\partial_x^2 + \partial_y^2 + \partial_z^2 & 0 & 0 \\  0 & \partial_x^2 + \partial_y^2 + \partial_z^2 & 0 \\  0 & 0 & \partial_x^2 + \partial_y^2 + \partial_z^2  \end{bmatrix} \\ \end{bmatrix}= \nabla\cdot\nabla I\\  \\ \nabla \times (\nabla \times)=  \begin{bmatrix}