[texhax] A Question about Union

[Robin Fairbairns]

>         $ \bigcup_{x \in S}DF(x)$
> 
> In this case, LaTeX is generating the x in S part as a subscript. What I
> would like it to do is put it directly under the union symbol. Is there a
> way that I can tell
> LaTeX to do that. I hope my question is clear.

 $ \bigcup\limits_{x \in S}DF(x)$

something so bulky is going to make your paragraph look very untidy.
far better to put it in a display (and rewrite your words slightly), in
which case the \limits won't be necessary.