# Turn off book style margins for amsart document class

Is there some way to turn off the alternation of larger left/right margins ("book style margins") when using a document class that turns this on by default? I'm looking to do this in particular with the amsart documentclass.

• Do you mean \documentclass[oneside]{amsart} perhaps? – user31729 May 1 '16 at 22:15
• amsart (and the other ams document classes) does not alternate different sized margins. by definition, the body is centered horizontally on the page (a requirement for creating plates for the press). if what you really mean is the alternation of running heads, then youi should use the option [oneside] as mentioned in the answers. – barbara beeton May 1 '16 at 23:37

The default of some (or many) classes is twoside, i.e. changing the margins for verso and recto pages (alternating).

Most of those classes provide a oneside option too, which switches this feature off!

• amsart
• article
• book
• memoir

have twoside by default, whereas report is oneside by default.

\documentclass[oneside]{amsart}

\usepackage{showframe}
\usepackage{blindtext}
\begin{document}
\blindtext[10]
\end{document}

• please see my comment on the question re amsart margins. – barbara beeton May 1 '16 at 23:38