03/13/2015, 07:40 PM
Just use the tex font "\( \pi \)"
Code:
[tex]\pi[/tex]Mother Law \(\sigma^+\circ 0=\sigma \circ \sigma^+ \)
\({\rm Grp}_{\rm pt} ({\rm RK}J,G)\cong \mathbb N{\rm Set}_{\rm pt} (J, \Sigma^G)\)
