deletions | additions       diff --git a/test_begin_matrix_kappa__aa__.tex b/test_begin_matrix_kappa__aa__.tex  index 0cb106c..f2a8507 100644  --- a/test_begin_matrix_kappa__aa__.tex  +++ b/test_begin_matrix_kappa__aa__.tex 
...
test  $$\begin{matrix}  \kappa_{aa}=\frac{\tilde{\kappa}_{aa}-\frac{c_{ab}\tilde{\kappa}_{ba}}{c_{bb}}}{1-\frac{c_{ab}c_{ba}}{c_{aa}c_{bb}}}} & yea }\\ \\  \widetilde{B}(z) & yea \\  \end{matrix}$$