LaTeX symbol under nabla

Question

In LaTeX, with \displaystyle , if I do something like:

\sum_{i=0}

then the i=0 appears under a giant Sigma. This is good.

Now, if I do (also in \displaystyle)

\nabla_{x}

the x does not appear under the nabla. It appears to the lower right. How can I make it appear under the nabla instead?

Answer 1

Have you tried \mathop?

\mathop{\nabla}_{x}

Answer 2

See the entry Sub- and superscript positioning for operators ("limits") in the TeX FAQ.

Answer 3

\mathop{\nabla}\limits_{x}