Generalized Lie Bialgebras and Jacobi Structures on Lie Groups

We study generalized Lie bialgebroids over a single point, that is, generalized Lie bialgebras. Lie bialgebras are examples of generalized Lie bialgebras. Moreover, we prove that the last ones can be considered as the infinitesimal invariants of Lie groups endowed with a certain type of Jacobi structures. We also propose a method to obtain generalized Lie bialgebras. It is a generalization of the YangBaxter equation method. Finally, we describe the structure of a compact generalized Lie bialgebra. Mathematics Subject Classification (2000): 17B62, 22Exx, 53D05, 53D10, 53D17.