Почему мое электронное письмо появляется на странице раньше, чем начинается статья?
\documentclass{article}
%
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{tabularx}
\usepackage{enumitem}
\usepackage{graphicx}
\usepackage{mathabx}
\usepackage{forest}
\usepackage{booktabs}
\usepackage{url}
\renewcommand{\Gamma}{\varGamma}
\renewcommand{\epsilon}{\varepsilon}
\renewcommand{\bar}{\overline}
\renewcommand{\hat}{\widehat}
\DeclareMathOperator{\Cir}{Cir}
\renewcommand{\leq}{\leqslant}
\renewcommand{\geq}{\geqslant}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{definition}{Definition}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{example}{Example}[section]
\newtheorem{notation}{Notation}[section]
\newtheorem{corollary}{Corollary}[section]
\newtheorem{remark}[lemma]{Remark}
\newcolumntype{C}{>{\centering\arraybackslash}X}
%Extra things that are included for simplicity.
\newcommand{\Po}{\mathcal{P}}
\newcommand{\R}{\mathbb{R}}
\newcommand{\Z}{\mathbb{Z}}
\newcommand{\C}{\mathbb{C}}
%
%
\newcommand{\Sym}{\mathrm{Sym}}
\newcommand*{\Scale}[2][4]{\scalebox{#1}{$#2$}}%
\newcommand{\vt}{\mathrm{vert}}
\newcommand{\conv}{\mathrm{conv}}
\newcommand{\Fix}{\mathrm{Fix}}
\newcommand{\Span}{\mathrm{Span}}
\newcommand{\core}{\mathrm{core}}
\newcommand{\PCir }{\mathrm{PCir }}
% Used for displaying a sample figure. If possible, figure files should
% be included in EPS format.
%
% If you use the hyperref package, please uncomment the following line
% to display URLs in blue roman font according to Springer's eBook style:
% \renewcommand\UrlFont{\color{blue}\rmfamily}
\begin{document}
%
\title{Outer approximations of core points for integer programming\thanks{Supported by NSERC grant RGPIN-2015-04955}}
%
%\titlerunning{Outer approximations of core points}
% If the paper title is too long for the running head, you can set
% an abbreviated paper title here
%
\author{Naghmeh Shahverdi\and
David Bremner}
%
%\authorrunning{ David Bremner and Naghmeh Shahverdi }
% First names are abbreviated in the running head.
% If there are more than two authors, 'et al.' is used.
%
%\institute{University of New Brunswick, Fredericton, NB, E3B 5A3 , Canada \\
\email{\{ nshahver,bremner \}@unb.ca}}
%
\maketitle % typeset the header of the contribution
%
