I want to have authors' name be shown in the title as the following photo. Here, authors' names are shown in each line with their affiliation and email address.

Also, I want to define a short title. For example, if the full title is "A Survey of Deep Reinforcement Learning in Recommender Systems: A Systematic Review and Future Directions", I want to define a short title like "A Servey of DRL in RS". In the header, authors' family name, and the short title should be shown. For example, in this style, in even pages, the header is like this:
And, in odd pages, we have:
I search and found this question and this, but it is different.
'''
\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amsfonts}
\usepackage{hyperref}
\usepackage{mathtools}
\usepackage{commath} % For use of abs >>> \abs{a}
\usepackage{appendix}
\usepackage{amsthm} % To add a box at the end of the proof \qed
\usepackage{setspace} % To add space between lines \setstretch{1.25}
\usepackage{natbib}
\usepackage[a4paper, left=0.9in, right=0.9in, top=1in, bottom=1in, footskip=0.25in]{geometry}
%\usepackage[a4paper, left=0.1in, right=0.2in, top=1in, bottom=1in, margin=1in,footskip=0.25in]{geometry}
\usepackage{hyperref,xcolor}
\DeclareMathOperator{\Tr}{tr}
\newtheorem{assumption}{Assumption}
\hypersetup{
colorlinks=true,
linkcolor=red,
urlcolor=red,
linktoc=all,
citecolor=red
}
\usepackage{apptools}
\AtAppendix{\counterwithin{lemma}{section}}
%%%%%%%%%%%%%%% For writing algorithms %%%%%%%%%%%%%%%
\usepackage{xcolor}
\usepackage[linesnumbered,ruled,vlined]{algorithm2e}
%%% Coloring the comment as blue
\newcommand\mycommfont[1]{\footnotesize\ttfamily\textcolor{blue}{#1}}
\SetCommentSty{mycommfont}
\SetKwInput{KwInput}{Input} % Set the Input
\SetKwInput{KwOutput}{Output} % set the Output
\setstretch{1.35}
%\bibpunct[, ]{(}{)}{,}{a}{}{,}%
\def\bibfont{\small}%
\def\bibsep{\smallskipamount}%
\def\bibhang{24pt}%
\def\newblock{\ }%
\def\BIBand{and}%
%% Setup of theorem styles. Outcomment only one.
%% Preferred default is the first option.
\TheoremsNumberedThrough % Preferred (Theorem 1, Lemma 1, Theorem 2)
%\TheoremsNumberedByChapter % (Theorem 1.1, Lema 1.1, Theorem 1.2)
\ECRepeatTheorems
\newtheorem{observation}{Observation}
\newtheorem{proposition}{Proposition}
\newtheorem{definition}{Definition}
\newtheorem{theorem}{Theorem}
\newtheorem{lemma}{Lemma}
\newtheorem{corollary}{Corollary}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\hypersetup{
colorlinks=true,% make the links colored
}
\definecolor{myblue}{RGB}{54, 58, 202}
\usepackage[toc,page]{appendix}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\title{A Survey of Deep Reinforcement Learning in Recommender Systems: A Systematic Review and Future Directions}
\author{Xiaocong Chen, Lina Yao, Julian McAuley, Guanglin Zhou, Xianzhi Wang}
\date{\today}
\begin{document}
\maketitle
{
\hypersetup{linkcolor=myblue}\tableofcontents}
\newpage
\section{Introduction}
\end{document}





fancyhdrcode you've tried and we can help you sort out the details. – Alan Munn Mar 07 '23 at 01:19\TheoremsNumberedThroughand\ECRepeatTheoremsare not LaTeX commands. – Pieter van Oostrum Mar 07 '24 at 12:38