6

In order to prevent the abstract environment from resetting the page numbering, I have redefined the environment as follows

\documentclass[11pt,a4paper]{report}    

\makeatletter
\renewenvironment{abstract}{%
  \if@twocolumn
    \section*{\abstractname}%
  \else
    \small
    \begin{center}%
      {\bfseries \abstractname\vspace{-.5em}\vspace{\z@}}%
    \end{center}%
    \quotation
  \fi}
  {\if@twocolumn\else\endquotation\fi}
\makeatother

\begin{document}

\begin{abstract}
This is the abstract...
\end{abstract}

\end{document}

This does the job but the abstract is no longer centred vertically. I'm not familiar with redefining environments - can anyone tell me how I can adjust the code above so that my abstract stays in the middle of the page?

5

Use this definition for your abstract:

\renewenvironment{abstract}{%
    \clearpage\small
    \null\vfil
    \begin{center}%
        {\bfseries \abstractname\vspace{-.5em}\vspace{0pt}}%
    \end{center}%
    \quotation
    }
{\endquotation\vfil\null\clearpage}

MWE:

\documentclass[11pt,a4paper]{report}

\renewenvironment{abstract}{%
    \clearpage\small
    \null\vfil
    \begin{center}%
        {\bfseries \abstractname\vspace{-.5em}\vspace{0pt}}%
    \end{center}%
    \quotation
    }
{\endquotation\vfil\null\clearpage}

\begin{document}

\begin{abstract}
This is the abstract...
\end{abstract}

\tableofcontents
\chapter{Chapter 1}
\section{Unhelpful content 1}
\section{Unhelpful content 2}

\end{document} 

Output:

enter image description here

|improve this answer|||||
  • Thanks, I wasn't aware of the command \vfil. Out of interest, the original definition of the abstract environment uses \@beginparpenalty, is this what causes the page number to reset? – Tom Offer Mar 30 '15 at 17:08
  • @TomOffer No, \endtitlepage resets it. – karlkoeller Mar 30 '15 at 17:11
  • \vspace*{\fill} is better, IMO. In any case, the \null at the end does nothing and you should instead add \clearpage. Also \par is redundant: \endquotation issues one. – egreg Mar 30 '15 at 17:37
  • @karlkoeller Yes, it makes a difference. \vspace*{\fill} is more infinite than \vfil, so it will kill the flexible glue around center and quotation even if it had first order infinite components. Moreover, if what comes after \end{abstract} doesn't start a new page, you'd be in trouble without \clearpage, wouldn't you? Besides, promoting \null is wrong, because it's quite a dangerous command. I'd prefer \clearpage\vspace*{\fill} to start, for the same reason why `\clearpage is needed at the end. – egreg Mar 30 '15 at 17:42
  • @egreg I agree only about \par and \clearpage – karlkoeller Mar 30 '15 at 17:45
2

I'd not vertically center the abstract: it appears to hang from nothing.

However, here's a possible definition that leaves you a different choice: the optional argument to \begin{abstract} is a fraction for stating the relative distance from the top of the page.

\documentclass[11pt,a4paper]{report}

\renewenvironment{abstract}[1][1]
 {\clearpage
  \vspace*{\stretch{#1}}
  \begin{center}
  \bfseries\abstractname
  \end{center}
  \quotation}
 {\endquotation\vfill\clearpage}

\begin{document}

\begin{abstract}
This is the abstract...
\end{abstract}

\begin{abstract}[.3]
This is the abstract...
\end{abstract}

\end{document}

enter image description here

Personally, I'd use the book class and \chapter{\abstractname} in \frontmatter.

|improve this answer|||||
  • Using \vfil as in the answer above seems to align the abstract roughly vertically central, like the original environment does. It works for me! – Tom Offer Mar 30 '15 at 18:30

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