General ⇒ Chapters, sections and amsbook

[tdc]

According to a nice big set of Latex notes our course leader has given us to help us write our dissertations, under amsbook, chapters should be numbered in roman numerals, sections should be of the form I.1, II.2 etc...

however in my tex file, it doesn't do this.. (see code below for a minimum working example)

I was wandering whether it was something small i missed, or whether our notes are outdated?

Code: Select all

\documentclass[a4paper,12pt]{amsbook}
\begin{document}
\chapter{here's 1}
\section{here's 1}
\section{here's 2}
\section{here's 3}
\chapter{here's 2}
\section{here's 1}
\section{here's 2}
\section{here's 3}
\end{document}

Cheers, Tim

[Stefan Kottwitz]

Hi Tim,

it could be done by

Code: Select all

\renewcommand*\thechapter{\Roman{chapter}}
\numberwithin{section}{chapter}

in the preamble.

Stefan

[tdc]

oo thank you

out of curiosity, is that something that was originally in the amsbook class... or are our notes flawed?

[Stefan Kottwitz]

The original definitions in amsbook.cls are different:

Code: Select all

\renewcommand\thechapter{\arabic{chapter}}
\renewcommand\thesection{\arabic{section}}

\numberwithin changed also \thesection, it could have been done by \renewcommand too.

Stefan