How do I put a $\frown$ right on top of $\otimes$? I tried \stackrel but it leaves too much space between symbols.

  • Welcome to SE. Please show, how you try so far ...
    – Zarko
    Mar 26, 2016 at 3:34

2 Answers 2


Here's a possibility:




$A\frownotimes B_{x\frownotimes y}$


enter image description here

  • Very nice. Exactly what I wanted.
    – epsilon
    Mar 26, 2016 at 4:18
  • Where does \hidewidth come from (amsmath )?
    – daleif
    Mar 26, 2016 at 18:53
  • 2
    @daleif Plain TeX; it's essentially \hskip-1000pt plus 1fill
    – egreg
    Mar 26, 2016 at 19:06
$A \frownotimes B_{x \frownotimes y}$

enter image description here


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