\newcommand {\pict}[1]{\begin {center} \input {pics/#1} \end {center}}
\newcommand {\pictwo}[1]{\begin {center} \scalebox{0.8}{\input{pics/#1}} \end {center}}

\theoremstyle {plain}
\newtheorem {theorem}{Theorem}[section]
\newtheorem {proposition}[theorem]{Proposition}
\newtheorem {lemma}[theorem]{Lemma}
\newtheorem {lemdef}[theorem]{Lemma and Definition}
\newtheorem {corollary}[theorem]{Corollary}
\newtheorem{conj}[theorem]{Question}
\theoremstyle {definition}
\newtheorem {definition}[theorem]{Definition}
\newtheorem {remdef}[theorem]{Definition and Remark}
%\theoremstyle {remark}
\newtheorem {remark}[theorem]{Remark}
\newtheorem {construction}[theorem]{Construction}
\newtheorem {convention}[theorem]{Convention}
\newtheorem {example}[theorem]{Example}

\newcommand{\N}{\mathbb{N}}
\newcommand{\Z}{\mathbb{Z}}
\newcommand{\Q}{\mathbb{Q}}
\newcommand{\R}{\mathbb{R}}
\newcommand{\C}{\mathbb{C}}
\newcommand{\AAA}{\mathbb{A}}
\newcommand{\PP}{\mathbb{P}}

\newcommand{\M}{\mathcal{M}}
\newcommand{\HH}{\mathcal{H}}
\newcommand{\bet}[1] {|{#1}|}
\newcommand {\mult}{\mathop {\rm mult}\nolimits}

\newcommand{\be}{\begin{equation}}
\newcommand{\ee}{\end{equation}}
\newcommand{\bi}{\begin{itemize}}
\newcommand{\ei}{\end{itemize}}

\newcommand{\lk}{\left\{ }
\newcommand{\rk}{\right\} }

\newcommand{\tn}{\textnormal}
\newcommand{\nf}{\normalfont}
\newcommand{\ev}{\tn{ev}}

\hyphenation {Kai-sers-lau-tern}

