I understand from an earlier Math SE query:
https://math.stackexchange.com/q/2719645
the following short hand notation could be used to express long chains of functional compositions (?) :
$f(x)=\bigcirc_{i=1}^n g_i$
to represent:
$f(x)= g_1 \circ \ g_2 \circ \dots \circ g_n (x)$
I have not seen this anywhere else except the mention in Math SE. How common/known is this notation if I were to use it in my paper(s)? I don't want to mystify the reader and send them to tangential research on notation, although I could really use a short hand notation. Can anyone give me an example of a paper/publication where this is used? If this is not correct, is there an alternate short hand notation?