The code below creates a chapter with capital I as chapter "number".
\documentclass{book}
\begin{document}
\setcounter{chapter}{8}%
\renewcommand{\thechapter}{\Alph{chapter}}%
\chapter{Introduction}
\begin{equation}
e = mc^2
\end{equation}
\end{document}
And hence all equations in the chapter will be numbered as I.x (x being the number of the equation in the chapter).
I would prefer that in equations the I would however not be capitalized, e.g.:
I it possible to do this without changing the chapter numbering (I want to keep that capitalised).
Thanks!
\renewcommand\theequation{\alph{chapter}.\arabic{equation}}
\renewcommand\theequation{\arabic{chapter}.\arabic{equation}}
scroman
numbering of chapters (in equations).