have often seen in texts on Lie groups a capital A but without the middle bar but how to make such in Latex ? 
Asked
Active
Viewed 1,836 times
4
user158293
- 149
-
10https://detexify.kirelabs.org/classify.html – Plergux Apr 15 '21 at 06:49
-
BTW, if either answer helped you, it'd be nice if you could accept the one you thought was best by clicking on the checkmark symbol. – chsk May 03 '21 at 09:54
2 Answers
17
That's an upper-case lambda, which can be obtained in math mode as \Lambda:
\documentclass{article}
\usepackage{amsfonts}
\begin{document}
$\gamma \colon \mathfrak{g} \to \Lambda^2 \mathfrak{g}$
\end{document}
chsk
- 3,667
4
In the case of Lie algebras you may actually be looking at \wedge or \bigwedge for the alternating algebra.
\documentclass{article}
\usepackage{amsfonts}
\begin{document}
$\gamma \colon \mathfrak{g} \to \bigwedge^2 \mathfrak{g}$
\end{document}
I would submit that $$\gamma \colon \mathfrak{g} \to \bigwedge^2 \mathfrak{g}$$ is the "right" way in this case, but there are people out there who use the $\Lambda$.
