# adding a mathematical symbol in front of an item bullet

How can I have, say an \implies symbol before each number in an enumerate environment?

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Consider using the enumitem package to regulate the display of labels inside lists:

\documentclass{article}
\usepackage{enumitem, amsmath}

\begin{document}

\begin{enumerate}[label={$\implies\ \arabic*.$}, ref=\arabic*]
\item First item.
\item Second item.
\item Last item.
\end{enumerate}

\begin{enumerate}
\item First item.
\item Second item.
\item Last item.
\end{enumerate}

\end{document}

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Thanks very much. Just to understand what's going on, suppose my enumeration is in the form of (a), (b) and so on... normally I have [(a)] as an option to the \enumerate command. How should I go about in this case? –  Abhimanyu Arora Jun 9 at 21:30
I think I got it from the help file. Thanks :-) –  Abhimanyu Arora Jun 9 at 21:31
@AbhimanyuArora: Using \begin{enumerate}[(a)] you're probably using the enumerate package (although shortlabels provide similar functionality in enumitem). enumitem just provides a broader spectrum of modifications to lists. –  Werner Jun 9 at 23:37