# how to use \twocolumn in amsart document class in latex?

I am typing in the following way in my manuscript.

\documentclass[12pt]{amsart}
\usepackage{amsmath,amsthm}
\begin{document}
\title{differential equations}
\author{sastry}
\begin{abstract}
some text
\end{abstract}
\maketitle
\twocolumn
\section{introduction}
----some data------
\end{document}

When I follow the above manner. I got the two column from introduction onward. But after abstract it moves to next column and then it starts double column.

So my question is: How to get introduction immediate of abstract in two columns?

With the multicol package:

\documentclass[12pt]{amsart}
\usepackage{amsmath,amsthm}
\usepackage{multicol}

\begin{document}
\title{differential equations}
\author{sastry}

\begin{abstract}
some text
\end{abstract}

\maketitle

\begin{multicols}{2}
\section{introduction}
----some data------

\end{multicols}

\end{document}
• Do not post Thanks you comment ! Please you the mark system. – flav Jan 29 '19 at 6:52
• If amsart is being used as specified by a journal publication you would need to check if they support use of multicol to change the journal layout. – David Carlisle Jan 29 '19 at 7:52

As for the standard classes, it is better to use the twocolumn option which sets up the whole design for two column, as opposed to using a one column setup but then locally switching to \twocolumn, the latter is really intended for special sections like indices set two column in a one column document.

\documentclass[12pt,twocolumn]{amsart}
\usepackage{amsmath,amsthm}
\begin{document}
\title{differential equations}
\author{sastry}
\begin{abstract}
some text
\end{abstract}
\maketitle

\section{introduction}
\def\z{ --- some data --- }
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z\z
\end{document}