E Minguzzi 2008 Class. Quantum Grav. 25 075015 doi:10.1088/0264-9381/25/7/075015
E Minguzzi
Show affiliationsCausal continuity is usually defined by imposing the conditions (i) distinction and (ii) reflectivity. It is proved here that a new causality property which stays between weak distinction and causality, called feeble distinction, can actually replace distinction in the definition of causal continuity. An intermediate proof shows that feeble distinction and future (past) reflectivity imply past (resp. future) distinction. Some new characterizations of weak distinction and reflectivity are given.
04.20.Gz Spacetime topology, causal structure, spinor structure
Issue 7 (7 April 2008)
Received 28 December 2007, in final form 19 February 2008
Published 18 March 2008
E Minguzzi 2008 Class. Quantum Grav. 25 075015
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