I would like to write the following for the legend of a curve : $$ \theta_n = \frac{\pi}{2}$$ Where the value $\frac{\pi}{2}$ is actually in a variable $Theta$ (I don't know in advance that it would be $\frac{\pi}{2}$). However, when I write this in mathematica : Style["\[Theta]n=" <> ToString[Theta]] The fraction goes under the $\theta_n$ like on this picture : [![enter image description here][1]][1] How can I do to make mathematica write properly what I want ? I am looking for a very simple solution. [1]: https://i.sstatic.net/SNlyX.png