I want to write in TeX this sign:

(Put in headings for bigger size). What's the syntax?

  • 3
    \stackrel{?}{=} Commented Oct 7, 2014 at 21:33
  • 2
    What @PrzemysławScherwentke said. Or \questeq (or use the unicode character directly) with \usepackage{unicode-math}. Commented Oct 7, 2014 at 21:36
  • @PrzemysławScherwentke:I came across this one but it seems to not render with MathJax. When trying to put it inside two $s it doesn't come out.
    – E Be
    Commented Oct 7, 2014 at 21:37
  • 4
    What MathJax may or may not do has nothing to do with (La)TeX! Commented Oct 7, 2014 at 21:39
  • 1
    Note that \stackrel is unknown in plain TeX. The syntax in plain TeX is \buildrel ?\over =. You can try if this syntax is working in MathJax (I don't know).
    – wipet
    Commented Oct 8, 2014 at 8:36

1 Answer 1


It is not a long answer, and working in LaTeX, not plain TeX, but according to Werner's suggestion...


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .