Katharina Radermacher: Strong Cosmic Censorship in orthogonal Bianchi B perfect fluids

Einstein's equation in General Relativity can be formulated as an initial value problem, where the initial data consists of the metric and second fundamental form on a three-dimensional Cauchy hypersurface. Choquet-Bruhat and Geroch proved that this initial value problem has a maximal globally hyperbolic development which is unique up to isometry. That this development is inextendible, at least for generic initial data, is the statement of the Strong Cosmic Censorship conjecture. In this talk I will give a proof of this conjecture in the setting of orthogonal Bianchi B cosmologies with the stress energy tensor of a perfect fluid.