Is there a circle symbol for the composition of two functions? Or do I have to resort to using other ways to represent that?
asked Jan 5, 2011 at 8:14
2 Answers
It's \circ:
\documentclass{article}
\begin{document}
\( f \circ f \)
\end{document}
answered Jan 5, 2011 at 8:19
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31@wrongusername. Yes, but it's generally considered a good idea to post something compilable. This one was not exactly hard :-)– Joseph Wright ♦Jan 5, 2011 at 8:25
Probably this is a good chance to recall the Detexify website, where you can simply draw the symbol you want, and obtain the needed code.
I'm a bad illustrator, but for me, after drawing the circle, \circ was the first hit.
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7I'd like to add that I tried to find this symbol with detexify but I failed as I found many other similar looking symbols but not
\circ. I actually needed to google "latex combine function symbol", to find this question.– ohcibiMay 15, 2016 at 17:40 -
4Would be great if detexify could use context, so you could draw
f o g.– OJFordFeb 26, 2017 at 4:27
:<math>(f\circ f)(x) = f(f(x)) = f^2(x)</math>;)$\bullet$.