\ 幾天前，我發現了這些筆記，這些筆記的書寫風格給我留下了深刻的印象。我也想像這樣做我的（數學）筆記。
但我是乳膠（背面）的初學者，所以我對如何像這樣轉換我的文件了解不多。然而，我使用這個網站幾天了，不知怎的，我明白了，我怎麼能在中心寫部分，在頂部寫頁碼等。
我在序言中的程式碼是：
\documentclass[a4paper,twoside,english]{article}
%\usepackage[T1]{fontenc}
%\usepackage{tgtermes}
%\usepakage{times}
\usepackage[paperheight=600pt,paperwidth=515pt ,bottom=-7mm,right=22.4mm]{geometry}
\setlength{\headsep}{5mm}
%\setlength{\hoffset}{0pt}
\setlength{\oddsidemargin}{1pt}
%\setlength{\marginparwidth}{0mm}
%\setlength{\marginparsep}{0mm}
\setlength{\evensidemargin}{1pt}
\setlength{\footskip}{1.6mm}
\setlength{\voffset}{-8mm}
\setlength{\headheight}{5mm}
\setlength{\textwidth}{370pt}
\setlength{\textheight}{530pt}
%\usepackage{xcolor}
\usepackage{titlesec}
%\titleformat{\subsection}[hang]{\bfseries}{}{1em}{}
%\setcounter{secnumdepth}{1}
%\usepackage{sectsty}
%\allsectionsfont{\centering}
%\titlelabel{\thetitle . \enspace}
\renewcommand\thesection{\arabic{section}.}
\titleformat{\section}[block]{\Large\centering}{\arabic{section}.}{1em}{}
%\sectionfont{\centering}
\usepackage{fancyhdr}
\usepackage{calc}
%\usepackage{showframe}
%\usepackage{fourier}
\usepackage{graphicx} % Required for inserting images
\usepackage{blindtext}
\usepackage{amsfonts,amsmath,amssymb,amsthm}
%\renewcommand\thesubsection{\thesection.\arabic{subsection}}
問題：但我唯一遇到的問題是，經過大量搜尋後我無法弄清楚這些字體樣式的名稱是什麼以及如何在我的應用程式中載入這些字體全部的文件?
此外，我也嘗試設定類似的邊距。但我無法僅透過查看 pdf 來計算頁邊距。
任何幫助將不勝感激。謝謝。
編輯：
這裡我說的是，整個文件的字體樣式。雖然乍一看這個 pdf 中的字體對我來說似乎是預設的。但是當我將它與我寫的pdf（預設字體）進行比較時，那就是
我發現文檔中的字體不是預設的。
編輯2
最小的工作範例是
\documentclass[a4paper,twoside,english]{article}
\usepackage{graphicx} % Required for inserting images
\usepackage[paperheight=600pt,paperwidth=515pt ,bottom=-7mm,right=22.4mm]{geometry}
\setlength{\headsep}{5mm}
\setlength{\oddsidemargin}{1pt}
\setlength{\evensidemargin}{1pt}
\setlength{\footskip}{1.6mm}
\setlength{\voffset}{-8mm}
\setlength{\headheight}{5mm}
\setlength{\textwidth}{370pt}
\setlength{\textheight}{530pt}
\usepackage{times}
\usepackage{titlesec}
\renewcommand\thesection{\arabic{section}.}
\titleformat{\section}[block]{\Large\centering\scshape}{\arabic{section}.}{1em}{}
\usepackage{fancyhdr}
\usepackage{blindtext}
\usepackage{amsfonts,amsmath,amssymb,amsthm}
\title{My doc}
\begin{document}
\section{Hello}
\blindtext
\end{document}
編輯3
在Mirco的幫助和指導下，我稍微修改了Mirco程式碼，得到了我真正想要的東西。
此外，現在我知道pdf的尺寸是11.33×14.67（肖像）。我如何在文件中發布此內容？
\documentclass{amsart}
\usepackage[a4paper,margin=3.75cm, top=1.74cm,bottom=1.5cm,left=3.74cm,right=3.74cm]{geometry}
\usepackage[english]{babel}
\hyphenation{pre-image} % avoid "preim-age"
\usepackage{cleveref} % for "clever" cross-references
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhead[C]{REAL ANALYSIS}
\fancyhead[LE,RO]{\thepage}
\fancyfoot{}
\renewcommand{\headrulewidth}{0pt}
\usepackage{blindtext}
%\usepackage{amsthm} % is loaded automatically by 'amsart' class
\theoremstyle{theorem} % italic lettering
\newtheorem{theorem}{Theorem}[section]
\newtheorem{proposition}[theorem]{Proposition} % all theorem-like environments to share the same counter
\theoremstyle{definition} % upright lettering
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\theoremstyle{remark}
\newtheorem*{remark}{Remark} % 'remark' env.: not numbered
\usepackage[scr=euler]{mathalpha} % for "Euler script"
\usepackage{enumitem} % for \newlist and \setlist macros
\newlist{thmenumerate}{enumerate}{1} % 'enumerate'-like list
\setlist[thmenumerate]{label=\upshape(\alph*)} % alphabetical numbering
\crefname{thmenumeratei}{part}{parts} % label for parts of enumerated list
% -------------
\begin{document}
\section{Real Analysis}
\addtocounter{theorem}{2} % just for this example
\noindent
(earlier stuff)
\begin{definition}
Let $(X,\mathscr{M})$ be a measurable space. A function $f\colon X\to[-\infty,\infty]$ is said to be $\mathscr{M}$-measurable (or simply \emph{measurable} when the context is clear) if the preimage
$f^{-1}((a,\infty])=\{x\in X\colon f(x)>a\}$ is measurable for every real number~$a$.
\end{definition}
\begin{example} \phantom{.}\par % force an immediate line break
\begin{thmenumerate}
\item Constant functions are measurable.
\item Given a subset $A$ of $X$, the characteristic function $\chi_{A}$ is a measurable function if and only if $A$ is measurable.
\item The continuous functions $f\colon \mathbb{R}^d\to \mathbb{R}$ are \dots
\item The monotone functions $f\colon \mathbb{R}\to \mathbb{R}$ are \dots
\end{thmenumerate}
\end{example}
\begin{proposition}
Let $(X,\mathscr{M})$ be a measurable space and let $f\colon X\to[-\infty,\infty]$ be a function. Then the following statements are equivalent:
\begin{thmenumerate}
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\end{thmenumerate}
\end{proposition}
\begin{proposition}
Let $(X,\mathscr{M})$ be a measurable space. If $f$ and $g$ are measurable functions defined on $X$, then the sets
\begin{thmenumerate}
\item \label{part:greaterthan} $\{x\in X\colon f(x)>g(x)\}$,
\item \label{part:greaterthanorequal} $\{x\in X\colon f(x)\ge g(x)\}$, and
\item \label{part:equal} $\{x\in X\colon f(x)=g(x)\}$
\end{thmenumerate}
are all measurable.
\end{proposition}
\begin{proof}
If $r_1,r_2,\dots$ is an enumeration of the rational numbers, then
\[
\{x\in X : f(x)>g(x)\} =
\bigcup_{n=1}^{\infty} \bigl[x\in X: f(x)>r_n\} \cap
\{x\in X: g(x)<r_n\}\bigr]
\]
is measurable since it is a countable union of measurable sets, establishing \cref{part:greaterthan}.
\Cref{part:greaterthanorequal} follows by noting that
\[
\{x\in X: f(x)\ge g(x)\}=\{x\in X: g(x)>f(x)\}^c,
\]
is measurable by \ref{part:greaterthan}.
Finally, to show \cref{part:equal} observe that
\[
\{x\in X:f(x)=g(x)\}=\{x\in X: f(x)\ge g(x)\} \cap
\{x\in X: g(x)\ge f(x)\}
\]
is measurable by \ref{part:greaterthanorequal}.
\end{proof}
\begin{remark}
We now want to show that \dots
\end{remark}
\noindent
(more stuff)
\section{Measure}
\begin{definition}
By a \emph{measure} $\mu$ on a measurable space $(X,\mathscr{M})$, we mean an extended real valued nonnegative set function $\mu\colon\mathscr{M}\to[0, \infty]$ for which $\mu(\emptyset)=0$ and which is \emph{countably additive} in the sense that for any countable disjoint collection $\{E_n\}_{n=1}^{\infty}$ of measurable sets,
\[
\mu\biggl(\,\bigcup_{n=1}^{\infty} E_n \biggr) =
\sum_{n=1}^{\infty} \mu(E_n)\,.
\]
By a \emph{measure space} $(X,\mathscr{M},\mu)$ we mean a measurable space $(X,\mathscr{M})$ together with a meausure~$\mu$ defined on~$\mathscr{M}$.
\end{definition}
\blindtext
\blindtext[4]
\section{Blind}
\blindtext[4]
\section{Help}
\blindtext[4]
\end{document}
答案1
我不會在選擇文件的設計元素方面重新發明輪子，而是會使用合適的文檔類，該類已經定義了感興趣文檔的許多結構元素，例如節標題的格式。對於您的特定文檔，一個主要候選者似乎是amsart文檔類別。文檔amsart類別也會自動載入amsmath、amssymb和amsthm套件。
並且，請充分利用 LaTeX 套件的功能，例如geometry（設定頁面和邊距參數）、enumitem（例如用於自訂的類似枚舉的清單）和cleveref（用於交叉引用目的）。
\documentclass{amsart}
\usepackage[a4paper,margin=3.75cm]{geometry}
\usepackage[english]{babel}
\hyphenation{pre-image} % avoid "preim-age"
\usepackage{cleveref} % for "clever" cross-references
%\usepackage{amsthm} % is loaded automatically by 'amsart' class
\theoremstyle{theorem} % italic lettering
\newtheorem{theorem}{Theorem}[section]
\newtheorem{proposition}[theorem]{Proposition} % all theorem-like environments to share the same counter
\theoremstyle{definition} % upright lettering
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\theoremstyle{remark}
\newtheorem*{remark}{Remark} % 'remark' env.: not numbered
\usepackage[scr=euler]{mathalpha} % for "Euler script"
\usepackage{enumitem} % for \newlist and \setlist macros
\newlist{thmenumerate}{enumerate}{1} % 'enumerate'-like list
\setlist[thmenumerate]{label=\upshape(\alph*)} % alphabetical numbering
\crefname{thmenumeratei}{part}{parts} % label for parts of enumerated list
% -------------
\begin{document}
\section{Real Analysis}
\addtocounter{theorem}{2} % just for this example
\noindent
(earlier stuff)
\begin{definition}
Let $(X,\mathscr{M})$ be a measurable space. A function $f\colon X\to[-\infty,\infty]$ is said to be $\mathscr{M}$-measurable (or simply \emph{measurable} when the context is clear) if the preimage
$f^{-1}((a,\infty])=\{x\in X\colon f(x)>a\}$ is measurable for every real number~$a$.
\end{definition}
\begin{example} \phantom{.}\par % force an immediate line break
\begin{thmenumerate}
\item Constant functions are measurable.
\item Given a subset $A$ of $X$, the characteristic function $\chi_{A}$ is a measurable function if and only if $A$ is measurable.
\item The continuous functions $f\colon \mathbb{R}^d\to \mathbb{R}$ are \dots
\item The monotone functions $f\colon \mathbb{R}\to \mathbb{R}$ are \dots
\end{thmenumerate}
\end{example}
\begin{proposition}
Let $(X,\mathscr{M})$ be a measurable space and let $f\colon X\to[-\infty,\infty]$ be a function. Then the following statements are equivalent:
\begin{thmenumerate}
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\item For every real number $a$, the set \dots
\end{thmenumerate}
\end{proposition}
\begin{proposition}
Let $(X,\mathscr{M})$ be a measurable space. If $f$ and $g$ are measurable functions defined on $X$, then the sets
\begin{thmenumerate}
\item \label{part:greaterthan} $\{x\in X\colon f(x)>g(x)\}$,
\item \label{part:greaterthanorequal} $\{x\in X\colon f(x)\ge g(x)\}$, and
\item \label{part:equal} $\{x\in X\colon f(x)=g(x)\}$
\end{thmenumerate}
are all measurable.
\end{proposition}
\begin{proof}
If $r_1,r_2,\dots$ is an enumeration of the rational numbers, then
\[
\{x\in X : f(x)>g(x)\} =
\bigcup_{n=1}^{\infty} \bigl[x\in X: f(x)>r_n\} \cap
\{x\in X: g(x)<r_n\}\bigr]
\]
is measurable since it is a countable union of measurable sets, establishing \cref{part:greaterthan}.
\Cref{part:greaterthanorequal} follows by noting that
\[
\{x\in X: f(x)\ge g(x)\}=\{x\in X: g(x)>f(x)\}^c,
\]
is measurable by \ref{part:greaterthan}.
Finally, to show \cref{part:equal} observe that
\[
\{x\in X:f(x)=g(x)\}=\{x\in X: f(x)\ge g(x)\} \cap
\{x\in X: g(x)\ge f(x)\}
\]
is measurable by \ref{part:greaterthanorequal}.
\end{proof}
\begin{remark}
We now want to show that \dots
\end{remark}
\noindent
(more stuff)
\section{Measure}
\begin{definition}
By a \emph{measure} $\mu$ on a measurable space $(X,\mathscr{M})$, we mean an extended real valued nonnegative set function $\mu\colon\mathscr{M}\to[0, \infty]$ for which $\mu(\emptyset)=0$ and which is \emph{countably additive} in the sense that for any countable disjoint collection $\{E_n\}_{n=1}^{\infty}$ of measurable sets,
\[
\mu\biggl(\,\bigcup_{n=1}^{\infty} E_n \biggr) =
\sum_{n=1}^{\infty} \mu(E_n)\,.
\]
By a \emph{measure space} $(X,\mathscr{M},\mu)$ we mean a measurable space $(X,\mathscr{M})$ together with a meausure~$\mu$ defined on~$\mathscr{M}$.
\end{definition}
\end{document}