- #1

- 83

- 0

[tex]

\frac{1-\Omega(t)}{\Omega(t)}=\frac{1-\Omega_0}{\Omega_0} \frac{1}{1+z}

[/tex]

where

[tex]

\Omega = \frac{\rho}{\rho_c}

[/tex]

and [itex]z[/itex] is the redshift.

I would like to know where this relation cames from. I supose it cames from the Friedmann equations but I am not getting there...