When I try to insert parentheses in Lyx, this is the dialog I get:

enter image description here

The glyphs for the different kinds of parentheses are missing. Any idea of how I can fix this?

  • You can just replace the delimiter after the \left and \right. For example: \left( \right), \left[ \right], \left\{ \right\}. Notice the extra `` on the third example. Commented Dec 26, 2017 at 19:38
  • @PhelypeOleinik No, you can't do that in LyX. Commented Dec 26, 2017 at 20:52

1 Answer 1


Turns out I was missing the fonts-lyx package. Under Ubuntu, fix with:

sudo apt install fonts-lyx

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