How to write numbers with a vertical line crossed on the corner?

Question

How to write this 2? I tried to google it but I cannot find any solution...

See https://tex.stackexchange.com/questions/58098/what-are-all-the-font-styles-i-can-use-in-math-mode — Marian G., Jun 10 '19 at 10:55
Take this picture https://i.stack.imgur.com/eZdhj.png from answer https://tex.stackexchange.com/questions/58098/what-are-all-the-font-styles-i-can-use-in-math-mode — Douglas Mencken, Jun 10 '19 at 10:57

score 3 · Accepted Answer · answered Jun 10 '19 at 11:44

3

Based on comments and suggestions below your question, one can use the bbold package to achieve the desired output.

\documentclass{article}

\usepackage{bbold}

\begin{document}
$\mathbb 2^{\mathcal U}$
\end{document}

Running it with pdflatex produces

answered Jun 10 '19 at 11:44

Marian G.

1 Answers1