%0 Journal Article %T An identity in Rota-Baxter algebras %A Rafael Diaz %A Marcelo Paez %J Mathematics %D 2006 %I arXiv %X We give explicit formulae and study the combinatorics of an identity holding in all Rota-Baxter algebras. We describe the specialization of this identity for a couple of examples of Rota-Baxter algebras. %U http://arxiv.org/abs/math/0612194v2