I am using a formula where I have to use $\boldsumbol l$. However on the slide, it looks like the letter capital I. How can I have a nice curvy version to denote vector l?

  • 2
    Not a duplicate. I checked those sites and they did not give me a concrete answer. Bernard has done the job for me.
    – Guna
    Jun 4, 2015 at 9:28
  • Other options you have: 1. In the modern toolchain with unicode-math, load a math font that comes with a bold version (XITS, Libertinus or Minion). 2: In unicode-math, load a bold math font with \setmathfont[version=bold]. 3: In the legacy toolchain, load the bm package after amsmath/mathtools.
    – Davislor
    Feb 22, 2019 at 12:25

1 Answer 1


Like that?



  $ \ell ~ \boldsymbol\ell $


Normal curly l and a bold curly l


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