Spectral Quadruples
arXiv:math-ph/0105006 · doi:10.1142/S0217732301003371
Abstract
A set of data supposed to give possible axioms for spacetimes. It is hoped that such a proposal can serve to become a testing ground on the way to a general formulation. At the moment, the axioms are known to be sufficient for cases with a sufficient number of symmetries, in particular for 1+1 de Sitter spacetime.
AMS-LaTeX, 7 pages, presented at the Euroconference "BRANE NEW WORLD and Noncommutative Geometry", Torino, Villa Gualino (Italy), October 2 - 7, 2000