Title: Generalized Gibbs measures

Abstract : In this talk, we shall describe the theory of generalized
Gibbs measures, developed during the last decades to provide a
rigorous framework describing equilibrium states in mathematical
statistical mechanics including renormalized measures and to
circumvent most of their pathologies, raised in the late sixties by
Griffiths Pearce and Israel. The explanation of their origin gave rise
to the so-called Dobrushin program of restoration of Gibbsianness,
whose state of art will be described during the talk.