[Tex/LaTex] How to get to use the sideset command on unusual symbols without an error message

errorssymbols

I would like to use the command, $\sideset{_\sigma}{_f}\times$ without an error message. This command renders the way I want it to, (a times with a left subscript of \sigma, and a right subscript of f).

My issue however is that I would like to compile through this error without have to skip it. So my question is can I put a command on that line that will compile though just that line, while being able to troubleshoot around it. In particular I would like to skip a particular error.
If not this, is their some other way I might be able to typeset this.

EDIT

Here is the code:

\documentclass[12pt]{article}
%\usepackage{MnSymbol}
\usepackage{amsmath,amssymb,amsfonts, xypic, mathrsfs, graphicx}
\usepackage[all]{xy}

\begin{document}
$\sideset{_g}{_f}\times$
\end{document}

Here is the error message:

./test2.tex:7:Limit controlsmust follow a math operator.

< argument > \times \nolimits

                                 _f
1.7 
$\sideset{_\sigma}{_f}\times

                             $
?

Best Answer

\sideset wants as its third argument an operator such as \sum; you get what you want by

\mathbin{_\sigma\times_f}
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