Ambient cosmology and spacetime singularities

We present a new approach to the issues of spacetime singularities and cosmic censorship in general relativity. This is based on the idea that standard 4-dimensional spacetime is the conformal infinity of an ambient metric for the 5-dimensional Einstein equations with fluid sources. We then find that the existence of spacetime singularities in four dimensions is constrained by asymptotic properties of the ambient 5-metric, while the non-degeneracy of the latter crucially depends on cosmic censorship holding on the boundary.

ll "Pasquillus extaticus" di Celio Secondo Curione: eresia, censura, tradizione a stampa e manoscritta del testo

The essay examines the print and manuscript traditions of the "Pasquillus extaticus" by Celio Secondo Curione with a particular focus on their relation with censorship. At first, the essay investigates into the redactional evolution and into the editorial history of the dialogue and of its vernacular versions, e.g. the relation between some editions of the "Pasquillus extaticus" and of the "Pasquino in estasi" (which appeared anonymously and without typographical information) and the provisions of political and ecclesiastical censorship in the 16th century. Finally, analysing the manuscript tradition, the essay discusses Carlos Gilly’s identification of «Coelii Secundi Pasquillus, emendatus impress[us]», registered in the inventory of the private library of the Basel typographer Johannes Oporinus, with the copy preserved at the Herzog August Bibibliothek Wolfenbüttel [hab: p 1811. 8º Helmst. (1)]). The author refutes Gilly’s hypothetical attribution to Curione’s handwriting of the many marginalia present in this copy.