| body | --uriencoded--$$ \normalsize \mathbf%7BM%7D_%7Bloc%7D = L \begin%7Bbmatrix%7D \frac%7Bm%7D%7B3%7D \\[0.3em] 0 & \frac%7Bm%7D%7B3%7D & & & sim. \\[0.3em] 0 & 0 & \frac%7Bm%7D%7B3%7D \\[0.3em] \frac%7Bm%7D%7B6%7D & 0 & 0 & \frac%7Bm%7D%7B3%7D \\[0.3em] 0 & \frac%7Bm%7D%7B6%7D & 0 & 0 & \frac%7Bm%7D%7B3%7D \\[0.3em] 0 & 0 & \frac%7Bm%7D%7B6%7D & 0 & 0 & \frac%7Bm%7D%7B3%7D \\[0.3em] \end%7Bbmatrix%7D $$ |
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