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\begin{document}
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\title{Ribbon 2-Knots, $1+1=2$, and Duflo's Theorem for arbitrary Lie algebras}

\author{Dror~Bar-Natan}
\address{
  Department of Mathematics\\
  University of Toronto\\
  Toronto Ontario M5S 2E4\\
  Canada
}
\email{drorbn@math.toronto.edu}
\urladdr{http://www.math.toronto.edu/~drorbn}

\author{Zsuzsanna~Dancso}
\address{
  School of Mathematics and Statistics F07\\
  University of Sydney NSW 2006\\
  Australia
}
\email{zsuzsanna.dancso@anu.edu.au}
\urladdr{www.math.toronto.edu/zsuzsi}

\date{First edition Not Yet, 2017, this edition \today. Electronic version
and related files at \url{\web}}

\subjclass[2010]{57M25}
\keywords{
  knots,
  2-knots,
  tangles,
  expansions,
  finite type invariants,
  Lie algebras,
  Duflo's theorem
}

\thanks{This work was partially supported by NSERC grant RGPIN 262178 and by ARC DECRA DE170101128.}

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\section{Introduction}

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