# Dot before Chapter and Section numbers

My Chapter numbers come out to me Chapter .1 instead of Chapter 1. This problem persists throughout in section as well as ToC.

A similar question is answered earlier, Dot before numbering, but it does not work in my case.

(Posting a MWE will take a lot of time, which I am running against.) Any suggestion?

• Posting solutions to something with errors takes a lot of time... Any suggestion? This has nothing to do with latex3. I assume, that some the counter formatting is just wrong – user31729 May 8 '15 at 16:39
• I don't understand. Do you want to remove the dot before the number or to add it after it? Posting a MWE takes as little time as a minute. You only need to post the preamble, an example title section and some wording. Maybe two title sections, throw in some Lipsum wording and you're done. – Alenanno May 8 '15 at 16:55
• On second thought, even just your preamble may be enough. Edit your question and paste the code between \documentclass{}...\begin{document}. – Alenanno May 8 '15 at 16:56
• Are you using a \part at all? What does \show\thechapter reveal in your .log? – Werner May 8 '15 at 17:09

The following reproduces the problem:

\documentclass{book}
\renewcommand{\thechapter}{\thepart.\arabic{chapter}}
\begin{document}

\tableofcontents

\chapter{A chapter}
\section{A section}
\end{document}


Note that \thechapter is defined to include \thepart.. Also, the part counter is typically set using \Roman (as in \renewcommand{\thepart}{\Roman{part}}). As such, if you don't have any \parts in your document, \@Roman{0} (the expansion on zero-counter part) defaults to nothing leaving you with the leading . in the chapter (and sub-hierarchical counter representations).

Either find and remove the part-included version of \thechapter, or redefine it in the following way:

\renewcommand{\thechapter}{\arabic{chapter}}


Some debugging might very the above assumption: Include \show\thechapter somewhere in your document, and investigate the .log at that point. It may show

> \thechapter=\long macro:
->\thepart .\arabic {chapter}.


or something similar.