1

enter image description here

I designated "D" on the image.

What is this math font called?

.

Thanks in advance.

  • 3
    It's just sans-serif. Try \mathsf{D}? – Au101 Dec 29 '16 at 4:14
  • Thanks! Then how about to make it bold? I tried \mathbf{\mathsf{D}} , but it does not works. – Jay Lee Dec 29 '16 at 4:23
  • Computer Modern does not have a bold sans-serif face, you will have to select a font that does have such a face – Au101 Dec 29 '16 at 4:24
  • 1
    Also unlike text font commands \mathxx fonts do not combine so you would need to declare a new math alphabet for bold sans not use \mathbf{\mathsf – David Carlisle Dec 29 '16 at 17:18
1

You can either define your own math alphabet (here \mathbfsf) for bold sans-serif

\documentclass{article}
\DeclareMathAlphabet{\mathbfsf}{OT1}{cmss}{bx}{n}
\begin{document}

$\mathsf{D}$ $\mathbfsf{D}$

\end{document}

or you can use the bm package

\documentclass{article}
\usepackage{bm}
\begin{document}

$\mathsf{D}$ $\bm{\mathsf{D}}$

\end{document}

The output is in both cases

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.