在以下 MWE 中，
\documentclass[12pt]{book}
\usepackage{afterpage}
\usepackage{epigraph}
\usepackage{fancyhdr}
\setlength{\headheight}{27.15pt}
\pagestyle{fancy}
\newcommand\blankpage{%
\null
\thispagestyle{empty}%
\addtocounter{page}{-1}%
\newpage}
\newcounter{mycounter}
\setcounter{mycounter}{0}
\begin{document}
\begin{titlepage}
A title\\
and its subtitle
\afterpage{\blankpage}
\end{titlepage}
\afterpage{\blankpage}
\pagenumbering{roman}
\indent Copyright \textcopyright\ 2023 The author All rights reserved.
\frontmatter
\newpage
\begin{center}
\(\mathit{for \ my \ partner}\)
\end{center}
\chapter{Preface}
\newpage
\chapter{Acknowledgements}
\newpage
\thispagestyle{empty}
\tableofcontents
\setcounter{tocdepth}{2}
\chapter{Introduction }
\medskip
\
\setlength{\epigraphwidth}{0.16\textwidth}
\epigraph{An epigraph}
\mainmatter
\chapter{The formal language}
\end{document}
前页的页码分为两组，不保留统计所有页面和仅对奇数页进行分页的模式。
这些问题如何解决？
我希望前言的所有页面都分页。
答案1
以下是根据评论部分@egreg 的提示给出的答案：
\documentclass[12pt]{book}
\usepackage[greek,english]{babel}
\usepackage{hyperref}
\usepackage{afterpage}
\usepackage{epigraph}
\usepackage{fancyhdr}
\setlength{\headheight}{27.15pt}
\pagestyle{fancy}
\newcommand\blankpage{%
\null
\thispagestyle{empty}%
\addtocounter{page}{0}%
\newpage}
\newcounter{mycounter}
\setcounter{mycounter}{1}
\begin{document}
\begin{titlepage}
A title\\
and its subtitle
\afterpage{\blankpage}
\end{titlepage}
\frontmatter
\pagenumbering{roman}
\indent Copyright \textcopyright\ 2023 The author All rights reserved.
\newpage
\begin{center}
\(\mathit{for \ my \ partner}\)
\end{center}
\chapter{Preface}
\newpage
\chapter{Acknowledgements}
\newpage
\tableofcontents
\setcounter{tocdepth}{2}
\chapter{Introduction }
\medskip
\
\setlength{\epigraphwidth}{0.16\textwidth}
\epigraph{An epigraph}
\mainmatter
\chapter{The formal language}
\end{document}