\documentclass[12pt,reqno]{article}

\usepackage[usenames]{color}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{amscd}

\usepackage[colorlinks=true,
linkcolor=webgreen,
filecolor=webbrown,
citecolor=webgreen]{hyperref}

\definecolor{webgreen}{rgb}{0,.5,0}
\definecolor{webbrown}{rgb}{.6,0,0}

\usepackage{color}
\usepackage{fullpage}
\usepackage{float}

\usepackage{psfig}
\usepackage{graphics,amsmath,amssymb}
\usepackage{amsthm}
\usepackage{amsfonts}
\usepackage{latexsym}
\usepackage{epsf}

\def\N{{\mathbb{N}}}
\newcommand{\NS}{\mbox{\scriptsize${\mathbb{N}}$}}
\newcommand{\de}{\mbox{\rm d}}
\newcommand{\G}{\mbox{$\mathcal{G}$}}
\newcommand{\E}{\mbox{$\mathbf{E}$}}
\newcommand{\OO}{\mbox{$O$}}  %\mathbf{O}

\setlength{\textwidth}{6.5in}
\setlength{\oddsidemargin}{.1in}
\setlength{\evensidemargin}{.1in}
\setlength{\topmargin}{-.5in}
\setlength{\textheight}{8.9in}

\newcommand{\seqnum}[1]{\href{http://oeis.org/#1}{\underline{#1}}}

\begin{document}

\begin{center}
\epsfxsize=4in
\leavevmode\epsffile{logo129.eps}
\end{center}

\theoremstyle{plain}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{proposition}[theorem]{Proposition}

\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\newtheorem{conjecture}[theorem]{Conjecture}

\theoremstyle{remark}
\newtheorem{remark}[theorem]{Remark}

\begin{center}
\vskip 1cm{\LARGE\bf 
Alternating Weighted Sums \\ 
\vskip .1in
of Inverses of Binomial Coefficients
}
\vskip 1cm
\large
Renzo Sprugnoli \\ 
Dipartimento di Sistemi e Informatica \\ 
Viale Morgagni 65 \\ 
50134 Firenze \\
Italy \\ 
\href{mailto:renzo.sprugnoli@unifi.it}{\tt renzo.sprugnoli@unifi.it}\\
\end{center}

\vskip .2 in

\begin{abstract}
We consider the alternating sums $S^{(m)}_n = \sum_{k=0}^n (-1)^{n-k}
k^m {n \choose k}^{-1}$, recently studied by Belbachir, Rahmani, and
Sury, and obtain some results complementary to those found by the three
authors, especially for what concerns generating functions, closed
forms and asymptotic approximation.
\end{abstract}

%%%%%%%%%%%%%%%%%%%%%%
\section{Introduction}
%%%%%%%%%%%%%%%%%%%%%%


\end{document}

                                                                                

