Séminaire Lotharingien de Combinatoire, B62b (2009), 22 pp.

Marc Aubry

Twisted Lie Algebras and Idempotent of Dynkin

Abstract. In this paper we define a Dynkin idempotent for twisted Hopf algebras and generalize the results of Patras and Reutenauer in the classical case. We treat as a special case the free Lie algebra and so generalize the results of Waldenfels.

Received: June 9, 2009. Accepted: November 22, 2009.

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