FatalMath Mode
Double Superscript
! Double superscript.
What this error means
Two consecutive superscript operators ^ were applied to the same base without grouping. Just like double subscript, LaTeX refuses ambiguous stacked superscripts.
Common causes
- Writing x^a^b instead of x^{ab} or x^{a^b}
- Accidentally adding a second ^ after a command with a superscript
- Template substitution that introduces an extra ^
How to fix it
Group the superscript content with braces. For x to the power of a+b, write x^{a+b}. For x to the power of a to the power of b, write x^{a^b}.
Code examples
Causes the error
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[ e^x^2 \]
\end{document}Fixed
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[ e^{x^2} \]
\end{document}Related errors
Test the fix live
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