\title{Subfactors of index less than 5, part 1: the principal graph odometer}


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

\author{Noah~Snyder}
\address{
}%
\email{nsnyder@math.columbia.edu}

\address{%
\rm URLs:\stdspace \tt \url{http://tqft.net/}
\rm and \tt
\url{http://math.columbia.edu/~nsnyder}}

\primaryclass{46L37} \secondaryclass{18D10} \keywords{
  Subfactors
}