I want to have a \left.\right| in a mathematical formula in a bold format (just the | line should be bolded, not the entire formula) and I didn't find a way. Any suggestion?

  • 1
    Possible duplicate of Bold brackets in equations
    – magula
    Oct 2, 2017 at 22:18
  • @magula it's style does not change by \bm at all.
    – CLAUDE
    Oct 2, 2017 at 22:24
  • 2
    @CLAUDE: Here is the difference without/with \bm: image The "style" does change. Not sure whether it's sufficient for your needs though. You may have to add more detail to your question.
    – Werner
    Oct 2, 2017 at 22:28

1 Answer 1


\DeclareFontShape{OMX}{cmex}{b}{n}{ <-> cmexb10 }{}




f(a,\left.\{b\}\right\boldvert c)\\
f(a,\left.\{b\}\right| c)\\


enter image description here

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