Mathematical Proceedings of the Cambridge Philosophical Society

Research Article

On the structure of causal spaces

E. H. Kronheimera1 and R. Penrosea1

a1 Birkbeck College, London


The paper examines the structure obtained by abstracting from the conventional (manifold) representation of relativistic space-time the concept of an event-set equipped with two partial orderings, whose counterparts are the notions ‘causally precedes’ and ‘chronologically precedes in the history of some observer’.

(Received June 03 1966)