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About: Topological censorship     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatLorentzianManifoldsyago:Artifact100021939yago:Conduit103089014yago:Manifold103717750yago:Object100002684yago:Passage103895293yago:PhysicalEntity100001930yago:Pipe103944672yago:YagoGeoEntityyago:YagoPermanentlyLocatedEntityyago:Tube104493505yago:Way104564698yago:Whole100003553 New Facet based on Instances of this Class

The topological censorship theorem (if valid) states that general relativity does not allow an observer to probe the topology of spacetime: any topological structure collapses too quickly to allow light to traverse it. More precisely, in a globally hyperbolic, asymptotically flat spacetime satisfying the null energy condition, every causal curve from past to future null infinity is fixed-endpoint homotopic to a curve in a topologically trivial neighbourhood of infinity.