%---------------------------------------------------------------%
%% Rivisita di Matematica della Universit� di Parma
%% LaTeX template for articles
%% Vers.4.2 - 31.07.2020
%---------------------------------------------------------------%
\documentclass[11pt,leqno,twoside]{article}
%%
%% don't change page size or margins
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\usepackage{geometry}
 \geometry{
 a4paper,
 total={126mm,194mm},
 left=25mm,
 top=30mm,
 textwidth=375pt,
 }

\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{indentfirst}

%% Authors can personalize equation numbering style
\numberwithin{equation}{section}

%% Authors can personalize numbering of the theorems, lemma, etc
\theoremstyle{plain}
\newtheorem{theorem}{\indent\rm T\,h\,e\,o\,r\,e\,m\;}[section]
\newtheorem{lemma}[theorem]{\indent\rm L\,e\,m\,m\,a\;}
\newtheorem{proposition}[theorem]{\indent\rm P\,r\,o\,p\,o\,s\,i\,t\,i\,o\,n\;}
\newtheorem{corollary}[theorem]{\indent\rm C\,o\,r\,o\,l\,l\,a\,r\,y\;}

\theoremstyle{definition}
\newtheorem{definition}[theorem]{\indent\rm D\,e\,f\,i\,n\,i\,t\,i\,o\,n\;}

\theoremstyle{remark}
\newtheorem{remark}[theorem]{\indent\rm R\,e\,m\,a\,r\,k\;}

\renewenvironment{proof}{\indent\rm P\,r\,o\,o\,f.\;}{\hfill $\square$ \\ \indent}



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\begin{document}
\thispagestyle{empty}


%----- first page ---------- HEADLINE Riv.Mat.Univ.Parma
$ $ \vspace {-2.2cm}
\begin{center}
\rule{8.8cm}{0.5pt}
\\[-5pt]
 {\footnotesize Riv.\, Mat.\, Univ.\, Parma,\, Vol. {\bf n} \,(202x), \,000-000}
\\[-10pt]
\rule{8.8cm}{0.5pt}
\end{center}
\vspace {1.7cm}


%----- first page -------- First Name (entire, not initials) Last Name of AUTHORS
\begin{center}
{\sc\large FirstName1 LastName1}, \
{\sc\large FirstName2 LastName2}  \ {\small and}  \
{\sc\large FirstName3 LastName3}
\end{center}
\vspace {1.1cm}

%----- first page ---------- TITLE
\centerline{\large{\textbf{Title of the article}}}


%----- first page ---------- footnote:
\renewcommand{\thefootnote}{\fnsymbol{footnote}}

\footnotetext{
%% if necessary :
This research was partially supported by ............ }

\renewcommand{\thefootnote}{\arabic{footnote}}
\setcounter{footnote}{0}

%----- first page ---------------------
\vspace{0.6cm}
\begin{center}
\begin{minipage}[t]{11cm}
\small{
%----- first page ---------------- Abstract
\noindent \textbf{Abstract.}
This is the text of the abstract \ldots.
\medskip

%----- first page ------------- Keywords
\noindent \textbf{Keywords.}
Word1, word2, word3, wordn.
\medskip

%----- first page -------------- AMS classification codes
\noindent \textbf{Mathematics~Subject~Classification:}
xxaayy, xxaayy, xxaayy.

}
\end{minipage}
\end{center}

%%if necessary :
%%\medskip
%%\tableofcontents
\bigskip


%----------------------------------------- SECTIONS AND SUBSECTION:
\section{Title of section}

Text of the section \ldots.

\subsection{Title of subsection}

Text of the subsection \ldots.

\subsubsection{Title of subsubsection}

Text of the subsubsection \ldots.

%---------------------------------------------- EQUATIONS:

\begin{equation}
\lim_{r\to\infty} \int_r^\infty v^sf(v)\,dv = 0.
\end{equation}

%---------------------------------------------- DEFINITION:

\begin{definition} Here is the text of the definition.
Use typeface emph for the \emph{name} of the term
defined.
\end{definition}

%---------------------------------------------- PROPOSITION:
\begin{proposition}
Here is the text of the proposition \ldots.
\end{proposition}

\begin{proof}
Here is the proof of the proposition \ldots.
\end{proof}

%--------------------------------------------acknowledgments:
\vspace{0.5cm} \indent {\it
A\,c\,k\,n\,o\,w\,l\,e\,d\,g\,m\,e\,n\,t\,s.\;} The authors
acknowledge support by the \ldots.

%%%----------------------------------------------%%%
%%%                BIBLIOGRAPHY                  %%%
%%%  REFERENCES SHOULD BE LISTED ALPHABETICALLY  %%%
%%%----------------------------------------------%%%
\bigskip
\begin{center}

\begin{thebibliography}{99}
\frenchspacing \small

%journal
\bibitem{fir} {\sc N. Author1}, {\sc N. Author2} and {\sc N. Author3},
{\it Title of the article},
Journal abbreviation {\bf vol.number} (year), pp-pp.

%book
\bibitem{scd} {\sc N. Author1} and {\sc N. Author2},
{\it Title of the book},
Publishing House, Town, Year.

\end{thebibliography}
\end{center}


%-----------------------------------------------
% Authors (name, address, e-mail)
%-----------------------------------------------
\bigskip
\bigskip
\begin{minipage}[t]{10cm}
\begin{flushleft}
\small{
\textsc{First Author}
\\*University of Xxxxxxxxx,
\\*Address
\\*Address
\\* City, Zip code, Country
\\*e-mail: xxxxxxxxx@yyyyyy.zz
\\[0.4cm]
\textsc{Second Author}
\\*University of Xxxxxxxxx,
\\*Address
\\*Address
\\* City, Zip code, Country
\\*e-mail: xxxxxxxxx@yyyyyy.zz
\\[0.4cm]
\textsc{Third Author}
\\*University of Xxxxxxxxx,
\\*Address
\\*Address
\\* City, Zip code, Country
\\*e-mail: xxxxxxxxx@yyyyyy.zz
}
\end{flushleft}
\end{minipage}

%---------------------------------------------------- THE END
\end{document}
