I am using a llncs.csl template to write a paper. And I want to do the following numbering for lemma:
Theorem 1, Lemma 1.1, Lemma 1.2, Theorem 2, Lemma 2.1, Lemma 2.2
The template use \spn@wtheorem{lemma}{Lemma}{\bfseries}{\itshape}
Can you please help me how i can make changes in templete so it can number lemma according to theorem number.
You could just redefine the lemma counter.
\documentclass{svjour3}
\counterwithin{lemma}{theorem}
\begin{document}
\begin{theorem}
A theorem
\end{theorem}
\begin{lemma}
A lemma
\end{lemma}
\begin{lemma}
Another lemma
\end{lemma}
\begin{theorem}
A theorem
\end{theorem}
\begin{lemma}
A lemma
\end{lemma}
\begin{lemma}
Another lemma
\end{lemma}
\end{document}
\counterwithin{lemma}{theorem} line before \begin{document}
theorem, then you might try this:\spnewtheorem{lem}{Lemma}[theorem]{\bfseries}{\itshape}and then you can do\begin{lem}...\end{lem}. However, we can probably provide more help if you are able to produce a minimal working example, see here: tex.meta.stackexchange.com/questions/228/…biblatextag as it is not relevant for the question