%!TEX root = ../obstruction.tex

\title{Obstructions to subfactor principal graphs from the graph planar algebra embedding theorem}

\author{Scott~Morrison}
\address{
}%
\email{scott@tqft.net}

\address{%
\rm URL:\stdspace \tt \\url{http://tqft/net/}}


\date{
  First edition: the mysterious future
  This edition: \today.
}

\primaryclass{} \secondaryclass{} \keywords{
 
}