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\documentclass{article}
\usepackage{verbatim}
\usepackage{rim,LUmat} 
%\usepackage{amsmath}
%{usepackage{...}	% if you need additional packages
\acta{2005}{688}{3}	% year, volume number, number of the first page
\received{today}	% for editor's use
			
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\newtheorem{thm}{Main Theorem}
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%%%% mandatory LUmat fields
%   \title[Running title]{Full title of the paper}
\title[How to prepare a paper]{How to prepare a paper for 
	publication in Acta Universitatis Latviensis}

\author[F.\,M.\,Lastname]{First Middle Lastname}
\institute{Department of Pure Applications, University of Lat Via\\
% This str., 222, City ZIPcode, State\\ % put here the address if you wish
\email{kuku@yahoo.com} }

%	if there are more authors:
%\author[F.\,Author1,~S.\,Author2]{First Author1, Second Author2}

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%\author[A.\,Author]{Aut Author\inst{1}\inst{,2}}  
%\institute{Description of the first institute
%	\and
%	Description of the second institute }	% including email

%   if there are authors from several institutes:
%\author[F.~Author1,~S.\,Author2,~T.\,Author3]{First Author1\inst{1}, 
%	Second Author2\inst{2}, \Third Author3\inst{1}\inst{,3}}
%\institute{Description of the first institute
%	\and
%   Description of the second institute
%   	\and
%   Description of the third institute }	% including emails

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\abstract{This is a template file for LUmat style file users.}
\keywords{abstract, paper, references}		% in alphabetical order
\classification{07Z13}{}   	% MR 2000 Classification code
%   if tere are several codes:
%\classification{primary code}{secondary code(s)} % separated by commas

\latvtitle{Kā to visu dara?}	% title in Latvian
\kopsavilkums{Te taču nav nekā ko kopsavilkumā rakstīt! Šis ir paraugs LUmat stila faila lietotājiem}        % abstract in Latvian
	%If you cannot fill in the title or the abstract in Latvian, 
	%leave the argument blank or empty
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%%%% Optional fields
%\dedication{Dedicated to Mr.\,X}

%   The standard LaTeX \thanks command is abolished. See \Thanks command 
%   at the end of the paper
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%------------- Body 
\begin{document}
%------------- Front matter
\maketitle
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Let the article begin ...
\begin{thm}  All circles are round 
\end{thm}
\begin{proof}
By induction on the size, starting with 
$$ o $$
and $$O$$
\end{proof}

First attempts to solve this problem put in \cite{N} have been made in \cite{me1} and \cite{me2}.

\newpage
continued 2 ...

%%%%%  acknovledgments (optional) 
\Thanks{This work is supported by you, him, and her. I thank you all.}
%%%%%

\begin{thebibliography}{11} % use the second argument what you need 
\bibitem{!!}
Author,\,A., 
\textit{I'm not a Good Mathematician}. 
World Mistic, Singapoure e.a., 1991, vii+333 pp.
\bibitem{KC}
Kandelakis,\,K., Ciceron,\,C.,
Helenic mathematics in the antique Rome.
In: Who,\,I., What,\,I., (eds.), \textit{Classical History of Mathematics}. Kluwer Acad. Publ., Athens, Rome, 1111, 100--97.
\bibitem{me1}
Lastname,\,F.\,M.,
My first paper. 
\textit{J.\,Journalisis}, \textbf{9} (1869), 101-105. 
\bibitem{me2}
Lastname,\,F.\,M., Lastname2,\,F2.\,M2., 
My second paper.
\textit{J.\,Mathematica}, \textbf{3} (1871), 91-97.
\bibitem{N}
Nobody,\,Y.,
Are all circles round? 
\textit{Acta Univ. Latviensis}, ser.\ \textit{Mathematics}, \textbf{333}, (2112), 1--2.
\bibitem{RR}	{\cyril
\cyr Kokorin,\,Yu.\,\Cdprime, 	
Kukuruza na polyakh i kol{\cprime}tsakh, \textrm{I}. 
\cyi Russkaya matematYcheskaya shkola, \upshape \textbf{13} (2005), 1--2.
}
\end{thebibliography}
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\makeend

\end{document}