\documentclass[11pt,notitlepage]{article}
\usepackage{amsmath,graphicx,amssymb,color,stmaryrd,datetime,amscd}
\usepackage[setpagesize=false]{hyperref}

\def\sheeturl{{\url{http://drorbn.net/AcademicPensieve/2013-08/}}}

\def\tbd{\text{\color{red} ?}}

\paperwidth 8in
\paperheight 10.5in
\textwidth 8in
\textheight 10.5in
\oddsidemargin -0.75in
\evensidemargin \oddsidemargin
\topmargin -0.75in
\headheight 0in
\headsep 0in
\footskip 0in
\parindent 0in
\setlength{\topsep}{0pt}
\pagestyle{empty}
\dmyydate
\newcounter{linecounter}
\newcommand{\cheatline}{\vskip 1mm\refstepcounter{linecounter}\thelinecounter. }
% Following http://tex.stackexchange.com/questions/23521/tabular-vertical-alignment-to-top:
\def\imagetop#1{\vtop{\null\hbox{#1}}}

\def\arXiv#1{{\href{http://front.math.ucdavis.edu/#1}{arXiv:#1}}}

\def\calA{{\mathcal A}}

\begin{document}
\setlength{\jot}{0ex}
\setlength{\abovedisplayskip}{0.5ex}
\setlength{\belowdisplayskip}{0.5ex}
\setlength{\abovedisplayshortskip}{0ex}
\setlength{\belowdisplayshortskip}{0ex}

\parbox[b]{2.8in}{
  {\LARGE\bf Cheat Sheet Enriquez}
  \newline{\tiny initiated 1/8/13; modified \today, \ampmtime}
}
\hfill\parbox[b]{5.2in}{\small
  \null\hfill\sheeturl
  \newline\null\hfill following Enriquez' \arXiv{math/0008128}, \arXiv{math/0101059}, \arXiv{math/0212325}
}

\rule{\textwidth}{1pt}

{\bf To do.}
$\bullet$ Add $\calA^E$

\end{document}

\endinput