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Command \' invalid in math mode on input line with 2^...

Add tags Information and discussion about LaTeX's general text formatting features (e.g. bold, italic, enumerations, ...)

Command \' invalid in math mode on input line with 2^...

Postby Félix on Wed May 25th, 2011

Hello,
I have a compilation problem with a specific command.
First, I have to mention that I do have the ams package.
Second, I also have all the babel french libraries to take punctuation into account.
Third, I use TeXnicCenter.

I first did this:
Code: Select all  •  Open in writeLaTeX
\item Indiquez que la validité sera vérifiée pour 2^{\operatorname{ Nb. d'éléments } }

then I had the warning: \ ' invalid in math mode on input line ...

So I changed it for:
Code: Select all  •  Open in writeLaTeX
\item Indiquez que la validité sera vérifiée pour \begin{equation} \text{ 2^{\operatorname{ Nb. d'éléments } } }\end{equation}


But now the told me that I am missing $ signs!

! Missing $ inserted. <inserted text> $
and I still have LaTeX Warning: Command \' invalid in math mode on input line ...

See, this is a never ending problem!

What the trick with these kind of things?
Last edited by Stefan_K on Fri May 27th, 2011, edited 1 time in total.
Reason: code markup
Félix
 
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Re: Command \' invalid in math mode on input line with 2^...

Postby localghost on Wed May 25th, 2011

Well, the error message is very clear. The „^“ command for superscripts is only allowed in math mode. For text mode you may use \textsuperscript{2}. Due to the lack of a minimal example this is all I can advise.


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Re: Command \' invalid in math mode on input line with 2^...

Postby Félix on Wed May 25th, 2011

Thank you, it worked perfectly well. But you probably meant that I should write
2\textsuperscript{Nb. d'éléments}. Anyway, thank you again for that.
Félix
 
Posts: 3
Joined: Wed May 25th, 2011


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