\documentclass{amsart}
\usepackage[all]{xy}
\usepackage{pstricks}
\usepackage{amssymb}

\newcommand{\fieldk}{\mathbf{k}}
\newcommand{\cC}{\mathbb{C}}
\newcommand{\Cc}{\mathcal{C}}
\newcommand{\dD}{\mathbb{D}}
\newcommand{\Dd}{\mathcal{D}}
\newcommand{\delby}[1]{\frac{\del}{\del #1}}
\newcommand{\gGg}{\mathfrak{g}}
\newcommand{\del}{\partial}
\newcommand{\im}{\mathrm{im}}
\newcommand{\id}{\mathrm{id}}
\newcommand{\fF}{\mathbb{F}}
\newcommand{\Ll}{\mathcal{L}}
\newcommand{\pP}{\mathbb{P}}
\newcommand{\rR}{\mathbb{R}}
\newcommand{\sS}{\mathbb{S}}
\newcommand{\twoby}[4]{\left[\begin{array}{cc}#1 &#2\\#3&#4\end{array}\right]}
\newcommand{\zZ}{\mathbb{Z}}
\newcommand{\opf}{\bigcirc\!\!\!\!\!\!\!\pitchfork}
\newcommand{\wh}{[unintelligible]}

\newtheorem{defi}{Definition}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{conj}{Conjecture}[section]
\newtheorem{cor}{Corollary}[section]
\newtheorem{remark}{Remark}[section]
\newtheorem{thm}{Theorem}[section]
\newtheorem{prop}{Proposition}[section]
%TBD numbering
\title{Topology Seminar, Spring 2012}
\author{Gabriel C. Drummond-Cole}

\begin{document}
\maketitle



\end{document}