Document Classes ⇒ svmono v5.6: theorem counter following subsection counter

[user49915]

Consider the following input:

Code: Select all

%\documentclass[envcountsame,envcountsubsect]{svmono-hacked}%%% How?
\documentclass[envcountsame,envcountsect]{svmono}%%% Version 5.6 from http://www.springer.com/gp/authors-editors/book-authors-editors/resources-guidelines/rights-permissions-licensing/manuscript-preparation/5636
\usepackage{hyperref}
\begin{document}
\pagenumbering{Roman}
% \author{I, the beloved one}
% \title{My Title}
%\maketitle
\frontmatter
% \tableofcontents%%% Irrelevant
\mainmatter
\chapter{My Chapter}
\begin{definition}MyDefinition1\end{definition}%
\begin{definition}MyDefinition2\end{definition}%
\section{My Section}
\begin{definition}MyDefinition3\end{definition}%
\begin{definition}MyDefinition4\end{definition}%
\subsection{My SubSection}
\begin{definition}MyDefinition5\end{definition}
\begin{definition}MyDefinition6\end{definition}
\end{document}

We wish to hack svmono in such a way that all the theorem-like environments share the same counter on the subsection level, i.e., produce something like

screenshot.png (45.61 KiB) Viewed 7370 times

How to do it cleanly? My own attempts result in

[1{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}pdfTeX warning (ext4): des
tination with the same identifier (name{theorem.1.1.1}) has been already used, 
duplicate ignored

\AtBegShi@Output ...ipout \box \AtBeginShipoutBox 
                                                  \fi \fi 
l.21 \end{document}
                   pdfTeX warning (ext4): destination with the same identifier 
(name{theorem.1.1.2}) has been already used, duplicate ignored

messages from hyperref, and, frankly, I don't really understand what to do.

[user22741]

Try `\counterwithin{theorem}{subsection}`:

Code: Select all

\documentclass[envcountsame,envcountsect]{svmono}

\usepackage{hyperref}

\counterwithin{theorem}{subsection}


\begin{document}

\chapter{My Chapter}
\begin{definition}MyDefinition1\end{definition}%
\begin{definition}MyDefinition2\end{definition}%
\section{My Section}
\begin{definition}MyDefinition3\end{definition}%
\begin{definition}MyDefinition4\end{definition}%
\subsection{My SubSection}
\begin{definition}MyDefinition5\end{definition}
\begin{definition}MyDefinition6\end{definition}
\end{document}

[user49915]

Wow! Thx! You saved my ass today. I don't see any package providing `\counterwithin`. I neither see `chngcntr` loaded anywhere. How does it work?

[user22741]

tex magic!

[user49915]

tex magic!

This magic works for me on Ubuntu 18.10 and Ubuntu 19.04 installations, but not on Ubuntu 18.04.02 LTS, and not on Debian 9.9. Is it hyperref that has to be updated or should it be something else?

[user22741]

add \listfiles to your document and compare the package versions written to the log file

[rais]

This magic works for me on Ubuntu 18.10 and Ubuntu 19.04 installations, but not on Ubuntu 18.04.02 LTS, and not on Debian 9.9. Is it hyperref that has to be updated or should it be something else?

With TL18, chngcntr's \counterwithin/\counterwithout commands (or some modified versions thereof) have been embedded into the LaTeX core, that's why you don't need the chngcntr package anymore. In fact, if used, it should throw an error, because these commands are already defined...

If you want to update, update your TeX distri. If you're using packaged versions of your Linux distri(s), that may not be possible---in that case, simply add \usepackage{chngcntr} for your older versions.

KR
Rainer

[user49915]

If you want to update, update your TeX distri.

Thx, I see. So, one should change the sources (include chngcntr or not) depending on which LaTeX distribution is used, right?

[rais]

Not necessarily. If you really need to run your code on different LaTeX-distro versions, you could try

Code: Select all

\makeatletter
  \@ifundefined{counterwithin}{\usepackage{chngcntr}}{}
\makeatother

that should load chngcntr only if \counterwithin isn't defined.

Or you could load amsmath and use its \numberwithin instead of \counterwithin.

KR
Rainer