Séminaire Lotharingien de Combinatoire, B21j (1989).
[Formerly: Publ. I.R.M.A. Strasbourg, 1990, 413/S-21, p.
60-66.]
Gilbert Labelle
Le dénombrement de structures asymétriques
Abstract.
We introduce an asymmetry indicatrix series enabling one to enumerate
the asymmetric structures belonging to an arbitrary
species. As for the cycle indicatrix series, the asymmetry
indicatrix series commutes wit the operations of sum, product,
substitution, and derivation. However, it is independent of
the cycle indicatrix series.
The paper has been finally published under the title
"On asymmetric structures" in
Discrete Math. 99 (1992), 141-164.