\documentclass{report}
%\renewcommand{\baselinestretch}{1.6}
%\oddsidemargin=.5in

\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{theorem}
\usepackage{epsfig}
\usepackage{subfigure}
\usepackage{color}

% can also use package twoside in argument of documentstyle

\setlength{\oddsidemargin}{-0.25in}
\setlength{\textwidth}{6.75in}
\setlength{\topmargin}{-0.5in}
\setlength{\textheight}{9in}

\parindent=0in

\newenvironment{previousequation}[1]{$$ \renewcommand{\@previousequationnumber}{\ref{#1}}}{\eqno{\hbox{(\@previousequationnumber)}}$$\global\@ignoretrue}

\def\shadowbox{\hbox{\rule[-0.0ex]{0.1ex}{1.2ex}%
\hspace{-0.1ex}\rule[-0.0ex]{1.2ex}{0.1ex}%
\hspace{0.0ex}\rule[-0.0ex]{0.1ex}{1.2ex}\hspace{-1.3ex}%
\rule[1.15ex]{1.25ex}{0.1ex}\hspace{-0.0ex}\rule[-0.25ex]{0.3ex}{1.1ex}%
\hspace{-1.2ex}\rule[-0.25ex]{1.1ex}{0.25ex}}}
\def\qed{\ifmmode \hbox{\hfill\shadowbox}
     \else \hphantom{x}\hfill\shadowbox \fi}
\def\QED{\mbox{\phantom{m}}\nolinebreak\hfill$\,\shadowbox$}
\def\proof{\noindent{\bf Proof: }}
%\def\endproof{\hspace*{\fill} \qed\par\endtrivlist\unskip}
\def\endproof{\hspace*{\fill} \qed\par\endtrivlist\vskip3pt}

\theoremstyle{plain}
\theorembodyfont{\normalfont}

%\theorembodyfont{\rmfamily}
%\newtheorem{definition}[theorem]{Definition}
%\theoremheaderfont{\sc\bf}
%
%\newtheorem{algorithm}[theorem]{Algorithm}
%\newtheorem{example}[theorem]{Example}
%\def\remark{{\noindent \bf Remark:\hspace{0.5em}}}

%\setcounter{secnumdepth}{-2}

\newenvironment{myproof}{\noindent{\bf Proof.}\rm}{\par\medskip}
\def\endmyproof{\hspace*{\fill}~\qed\par\endtrivlist\vskip3pt}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{algorithm}[theorem]{Algorithm}
\newtheorem{example}[theorem]{Example}
\def\remark{{\noindent \bf Remark:\hspace{0.5em}}}

\def\dblone{\hbox{$1\hskip -1.2pt\vrule depth 0pt height 1.6ex width 0.7pt
                  \vrule depth 0pt height 0.3pt width 0.12em$}}

\def \R{{\mathbb R}}
\def \C{{\mathbb C}}
\def \Q{{\mathbb Q}}
\def \N{{\mathbb N}}
\def \Z{{\mathbb Z}}
\def \T{{\mathbb T}}
\def \H{{\mathbb H}}
\def \Ir{{\mathbb I}}
\def \Pos{{\mathbb P}}
\def \A{{\mathcal A}}
\def \B{{\mathcal B}}
\def \D{{\mathcal D}}
\def \F{{\mathcal F}}
%\def \S{{\mathcal S}}
\def \Hi{{\mathcal H}}
\def \Hchan{{\mathbf H}}

\def \Ll{{\mathcal L}}
\def \Lone{{L^1(\R^d)}}
\def \Ltwo{{L^2(\R^d)}}
\def \Lon{{L^1(\R)}}
\def \Lto{{L^2(\R)}}
\def \Lp{{L^{ ^{\scriptstyle p}}(\R^d)}}
\def \Lq{{L^{ ^{\scriptstyle q}}(\R^d)}}
\def \Linf{{L^{ ^{\scriptstyle \infty}}(\R^d)}}
\def \lq{{\ell^{ ^{\scriptstyle q}}(\Z^d)}}
\def \lp{{\ell^{ ^{\scriptstyle p}}(\Z^d)}}
\def \ll{{\ell^{ ^{\scriptstyle 2}}(\Z^d)}}
\def \li{{\ell^\infty(\Z^d)}}
\def \llq{{\ell^{ ^{\scriptstyle q}}\!\!(\Z)}}
\def \llp{{\ell^{ ^{\scriptstyle p}}\!\!(\Z)}}
\def \llt{{\ell^{ ^{\scriptstyle 2}}\!\!(\Z)}}
\def \llo{{\ell^{ ^{\scriptstyle 1}}\!(\Z)}}
\def \lld{{\ell^2(\Z^d)}}

\def \a{{\alpha}}
\def \b{{\beta}}
\def \d{{\delta}}
\def \eps{{\epsilon}}
\def \e{\varepsilon}
\def \g{{\gamma}}
\def \G{{\Gamma}}
\def \k{{\kappa}}
\def \p{{\psi}}
\def \t{{\tau}}
\def \w{{\omega}}
\def \l{{\ell}}
\def \la{{\lambda}}
\def \La{{\Lambda}}
\def \m{{\mu}}
\def \n{{\nu}}
\def \O{{\Omega}}
\def \r{{\rho}}
\def \th{{\theta}}
\def \s{{\sigma}}
%\def \S{{\Sigma}}
\def \x{{\xi}}
\def \z{{\zeta}}
\def \ph{{\varphi}}
\def \Ph{{\Phi}}
\def \P{{\Psi}}
\def \U{{\Upsilon}}

\def \be{\begin{equation}}
\def \ee{{\end{equation}}}
\newcommand{\bi}{\begin{itemize}}
\newcommand{\ei}{\end{itemize}}
\newcommand{\im}{\item}
\def \bea{\begin{eqnarray}}
\def \eea{\end{eqnarray}}
\def \bpm{\begin{pmatrix}}
\def \epm{\end{pmatrix}}
\def \bex{\begin{example}}
\def \eex{\end{example}}
\def \bbm{\begin{bmatrix}}
\def \ebm{\end{bmatrix}}
\def \bc{\begin{center}}
\def \ec{\end{center}}
\def \bd{\begin{definition}}
\def \ed{\end{definition}}

\def \bh{\begin{huge}}
\def \bH{\begin{Huge}}
\def \bL{\begin{Large}}
\def \eL{\end{Large}}
\def \eh{\end{huge}}
\def \eH{\end{Huge}}

\def \pmkn{{(-1)}^{k+n}}

\def \nn{{\nonumber}}
\def \np{{\newpage}}
\def \noi{{\noindent}}

\def\ord{{\cal O}}
\def\ninN{{n{\in}\N}}
\def\Dil{{\cal D}_{\alpha}}
\def\Chirp{{\cal C}_{\beta}}
\def\SQ{{S^{\frac{1}{2}}}}
\def\LambdaR{{\Lambda_{R}}}
\def\Lambdai{{\Lambda_{1}}}
\def\Lambdaii{{\Lambda_{2}}}

\def\ntoinf{{n \rightarrow \infty }}
\def\toinf{{\rightarrow \infty }}
\def\tozero{{\rightarrow 0 }}

\def\supp{{supp}}
\def \frac#1#2{{\mathinner{#1 \over #2}}}

\def \secsep{\vh***********************************************************************\\\vh}
\def \eqsep{\vh\noi==============================================\\\vh}

\def \Lsp{{\boldsymbol L}}
\def \LtR{{\Lsp^2(\R)}}

\def \Ra{{\,\,\Rightarrow\,\,}}
\def \ra{{\,\,\rightarrow\,\,}}
\def \Lfa{{\,\,\Leftarrow\,\,}}
\def \LRa{{\,\,\Leftrightarrow\,\,}}
\def \lra{{\,\,\longrightarrow\,\,}}
\def \Lra{{\,\,\Longrightarrow\,\,}}
\def \Llra{{\,\,\Longleftrightarrow\,\,}}
\def \fa{{\,\,\forall\,\,}}
\def \ex{{\,\,\exists\,\,}}
\def \st{{\,\,\ni\,\,}}
\def \contr{{(\Rightarrow\Leftarrow !)}}
\def \ntoinf{{\underset{n\rightarrow\infty}{\lim}\,\,}}
\def \and{{\,\,\wedge\,\,}}
\def \oor{{\,\,\vee\,\,}}
\def \v{\vspace{1in}}
\def \vh{\vspace{.5in}}
\def \vhh{\vspace{.25in}}
\def \vhhh{\vspace{.125in}}

\def \bp{\begin{myproof} }
\def \ep{\end{myproof}}
\def \bs{\begin{mysolution}}
\def \es{\end{mysolution}}

\newcommand \wh{\widehat}
\newcommand \wt{\widetilde}

\def \bl{\begin{lemma}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \el{\end{lemma}}
\def \bd{\begin{definition}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \ed{\end{definition}}
\def \ba{\begin{axiom}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \ea{\end{axiom}}
\def \bt{\begin{theorem}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \et{\end{theorem}}
\def \bc{\begin{corollary}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \ec{\end{corollary}}
\def \br{\begin{remark}$\hspace{-.08in}${\bf{.}}$\,\,\,$}
\def \er{\end{remark}}
\def \bpr{\begin{problem}}
\def \epr{\end{problem}}
\def \bcm{\begin{comment}}
\def \ecm{\end{comment}}

%\renewcommand{\familydefault}{cmss}% USE ONLY IF YOU DO SLIDES!!!!!!!






\begin{document}

$x\in\R$



\end{document}
