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The theory of Vassiliev invariants deals with many modules of diagrams
on which the algebra Λ defined by Pierre Vogel acts. By
specifying a quadratic simple Lie superalgebra, one obtains a character
on Λ. We show the coherence of these characters by building a
map of graded algebras beetwen Λ and a quotient of a ring of
polynomials in three variables; all the characters induced by simple Lie
superalgebras factor through this map. In particular, we show that the
characters for the Lie superalgebra f(4) with dimension 40
and for sl3 are the same.
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