# koma book chapter number with trailing .0?

By default, KOMA-Script scrbook produces chapters numbered like "1. Introduction". How can I get a chapter numbered like "1.0 Introduction"?

\documentclass{scrbook}

\def\thechapter{\arabic{chapter}.\arabic{section}}
% \def\thechapter{\arabic{chapter}.0} % or just put zero
% you need to redefine thesection, etc since their original definition depends on thechapter
\def\thesection{\arabic{chapter}.\arabic{section}}

\begin{document}
\chapter{Introduction}
\section{A first section}
\end{document}


You can do this by redefine \thechapter, etc. Note that you need to redefine also \thesection etc otherwise they will be 1.1.1 or 1.0.1 depend on which \def above you use for \thechapter

• Thanks! This almost works. First, it also requires numbers=noenddot, as in Herbert's solution. Second, it also needs something to adjust the space in the TOC entry between the chapter number and the chapter title, since some space gets eaten by that ".0". Any ideas? – Jack Tanner Jul 14 '11 at 16:19
• @Jack Tanner Be honest I never used KOMA-Script (the english docs are never up to date and I don't read de, and it does not feel good to work with something without up to date docs). However when working with standard class I use tocloft for table of contents. And memior provide similar functionality. I guess you need to check KOMA's manual to see if it provide a way to change the look of TOC or if pacakges like tocloft are compatible with KOMA – Yan Zhou Jul 14 '11 at 17:28
\documentclass[numbers=noenddot]{scrbook}
\renewcommand\thechapter{\arabic{chapter}.0}
\begin{document}
\chapter{foo}

\end{document}

• Sections will be numbered 1.0.x – egreg Jul 14 '11 at 7:43
• did I said that it wouldn't? The OP didn't said anything about his section numbering ... – user2478 Jul 14 '11 at 7:47