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I want to allow custom numbering of examples in Beamer. In particular, I want to be able to have lists like the following (and I want to be able to use prime superscripts potentially for any number on a list):

  1. Example 1.
  2. Example 2. 2’. Example 2.

I’m using a suggestion made by timothymctim here: `LaTeX Beamer: Enumerate with manual numbers', namely:

\documentclass{beamer}

    \newcommand{\labelname}[1]{
    \def\insertenumlabel{#1}%
\usebeamertemplate{enumerate item}%
 }

\begin{document}

\begin{frame}
\begin{enumerate}
    \item first
    \item[\labelname{1'}] prime
    \item second
\end{enumerate}
\end{frame}

\end{document}

Unlike timothymctim, I want to use the default theme, not Warsaw. However, when I use default theme, the custom numbered bullet point is not properly indented; it is misaligned relative to other numbers on the list. How can I control for this?

Community
  • 1
bozidarka
  • 960

2 Answers2

3

The label is properly aligned but on the right side and not on the left. A compromise could be to align it on both sides by moving the prime on top of the period. 

\documentclass{beamer}

\newlength{\primewidth}
\settowidth{\primewidth}{'}

\begin{document}

\begin{frame}
\begin{enumerate}
    \item first
    \item[1'\hskip-\primewidth .] prime
    \item second
\end{enumerate}
\end{frame}

\end{document}

enter image description here

samcarter_is_at_topanswers.xyz
  • 158,329
3

To ignore the with of the prime, you can use a right overlap (\rlap):

\begin{enumerate}
    \item first
    \item[1\rlap{'}.] prime
    \item second
\end{enumerate}

As mentioned by @samcarter, the use of \labelname is not strictly necessary here. However, it might still be useful if you use something different from the default enumerate items theme: in that case, use \labelname{1\rlap{'}} (note that the . is now omitted).

timothymctim
  • 422
  • 1
    That's a clever solution! But is the \labelname necessary in this case? Wouldn't \item[1.\rlap{'}] prime give the desired result? – samcarter_is_at_topanswers.xyz Mar 01 '17 at 13:07
  • @samcarter Thanks, although it's about the same solution as yours, albeit a bit shorter. You're right about the \labelname: If you use default for enumerate items, you can just use \item[1\rlap{'}.] – timothymctim Mar 02 '17 at 21:09