How to represent this superscript?

Question

I am trying to write this command below but it doesnt work.

$$\triangle$^m$

Answer 1

You have additional $ signs in your code snippet. The superscript ^, and subscript _ need to be in math mode.

Use $\triangle^m$ for superscript. If you want a subscript use $\triangle_m$. If you intention is to make the entire term a sub- or superscript then you'll need to enclose it with a {} group.

Note:

• For the superscript version, I think it looks better if you slightly move the superscript to the left via a \kern.
• If your intent is to use display math you should use \[ and \] instead of $$ delimiters. See Why is \[ ... \] preferable to $$?.

Code:

\documentclass[fleqn]{article}
\usepackage{amsmath}

\begin{document}
Inline math: $\triangle^m \quad \triangle_m$
%
\[ \text{Display math:}\quad \triangle^m \quad \triangle_m \]
%
If the entire term is to be super or sub script:
\[ \text{Display math:}\quad x_{\triangle^m} \quad x_{\triangle_m} \]
\end{document}

Answer 2

• If you want to produce an dollar sign followed by a triangle followed by a dollar sign followed by a superscript m, the correct syntax is $\$\triangle\$^m$.
• If you want to produce a subscript triangle and a superscript m, the correct syntax is ${}_\triangle^m$.