El viernes 23 de marzo a las 10 horas, en el aula C3A del Edificio Carlos Benítez en Badajoz, la profesora J. Wafaa Batat de la Ecole Nationale Polytechnique d’Oran- Maurice Audin (Argelia). impartirá la conferencia: «Homogeneous structures on three-dimensional lorentzian manifolds«.

Descripción: In this talk, we will introduce the notion of homogeneous pseudo-Riemannian structures. We will give a complete classfication of these structures on Lorentzian three-manifolds admitting a parallel null vector field, also on 3-dimensional manifolds with large isometry group, and finally we will give a complete classification of skew-symmetric homogeneous structures in dimension 3. This leads to the full classification of naturally reductive Lorentzian 3-spaces.