HowTo_TitleAtTwoColum

How to set the title and abstract spanning both columns in a two-column article

Even in a two-column document, not only title pages, but especially the in-page title is set spanning both columns:

\documentclass[10pt,twocolumn]{scrartcl}
\usepackage[english]{babel}
\usepackage{blindtext}
\begin{document}
\title{Two-Column Document with Spanning Title, but Single-Column
  Abstract}
\author{Markus Kohm}
\date{2021/07/20}% For timeless documents the argument can be left empty.
\maketitle
\begin{abstract}
  The abstract begins here. \blindtext
\end{abstract}

\blinddocument
\end{document}

As you can see in the example, the abstract is not printed spanning both columns, but as part of the first column or multi-column typesetting.

If the abstract is to be set spanning columns like the title itself, the statement \twocolumn can be used for this. The optional argument specifies the part of the page to be set spanning both columns:

\documentclass[10pt,twocolumn]{scrartcl}
\usepackage[english]{babel}
\usepackage{blindtext}
\begin{document}
\title{Two-Column Document with Spanning Title and Spanning Abstract}
\author{Markus Kohm}
\date{2021/07/20}% For timeless documents the argument can be left empty.
\twocolumn[{%
%  \csname @twocolumnfalse\endcsname% Enable this hack only if the abstract
%  is to be indented on the left and on the right. Alternatively, you could
%  just replace the abstract environment at the bottom with a quote
%  environment, as long as option abstract is not used.
  \maketitle
  \begin{abstract}
    This is where the abstract begins. \blindtext
  \end{abstract}
  \bigskip
}]

\Blinddocument
\end{document}

In the example, the abstract is not indented on the right and the left, as is usual in single-column typesetting. In single-column typesetting, the indent creates a visual separation from the subsequent document content. In the example, however, such an optical separation is already achieved by the abstract spanning the two columns. If you still want to achieve an identical formatting to the single-column sentence, you have to activate the commented statement \csname @twocolumnfalse\endcsname.