I like the bm package. However, it seems to me the line


won't make curl bold. Although changing bm to mathbf will do the job, I have to use mathbf everytime afterwards to keep consistency, which is something I'd like to avoid. Are there any solutions to that?

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    – yo'
    Feb 2, 2015 at 14:24

1 Answer 1


The definitions are the wrong way round.

You want something like


Or you could save TeX some work figuring out what that means and do



PS of course you like the bm package:-)

  • 1
    Isn't it \mathop{{}\mathbf{curl}}?
    – yo'
    Feb 2, 2015 at 14:31
  • 1
    @yo' my eyes are not as good as they once were, but I reckon there is more than 1 letter in curl Feb 2, 2015 at 14:35
  • Ah, I always miss something with \mathop, thanks for clarifying.
    – yo'
    Feb 2, 2015 at 14:35
  • 2
    best customer service ever:-)
    – user33869
    Feb 2, 2015 at 14:44
  • 2
    @DavidCarlisle -- this construction isn't blindingly obvious. in fact, reading the output of texdoc bm it still is neither blindingly obvious, nor even hinted at. why don't you do a good deed and add it. please? Nov 13, 2015 at 21:26

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