deletions | additions       diff --git a/prova.tex b/prova.tex  index bcd9086..34f2ef0 100644  --- a/prova.tex  +++ b/prova.tex 
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\end{equation}  where $\rho_m$ is given by \ref{matterconservation}.  The background expansion of the universe is so described by a set of function $( $$