Consider:
I would like to know the LaTeX command for the symbol above. I searched for it online and tried Detexify, but I could not find it.
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I would like to know the LaTeX command for the symbol above. I searched for it online and tried Detexify, but I could not find it.
\documentclass{article}
\usepackage{bbm}
\begin{document}
$\mathbbm{i}$
\end{document}
One drawback, of course is that the bbm fonts are bitmapped. There is a scalable alternative with the STIX fonts, but it looks slightly different.
\documentclass[border=10]{standalone}
\usepackage{amsmath}
\DeclareFontEncoding{LS1}{}{}
\DeclareFontSubstitution{LS1}{stix}{m}{n}
\newcommand{\bbi}{\text{\usefont{LS1}{stixbb}{m}{n}i}}
\begin{document}
$\bbi$
\end{document}
\mathbb
tag? Please advise...
If you have the option to use unicode math, you can also use \Bbbi
(U+1D55A) or \mitBbbi
(U+02148) for the italic one (Thanks to Ingmar who pointed this out). Below you see the result in some of the commonly used fonts. If the font does not have it a question mark is shown.
There is Unicode character U+1D55A (MATHEMATICAL DOUBLE-STRUCK SMALL I). If you
use a TeX-engine that allows you to use arbitrary fonts (like LuaLaTeX
) and have a font that supports the glyph, you could use 𝕚 directly, as it were.