TY - JOUR EP - 383 N2 - Three of the rewriting systems used by Degano, De Nicola and Montanari to provide Milner's CCS with a causality based semantics are compared by using also a fourth intermediate one. These rewriting systems have been used to associate Petri nets, Labelled Event Structures and structured sets of partial orderings to CCS terms. It is proved that the four rewriting systems yield computations from which the same causality relations among the executed actions can be extracted, thus it is established that the four partial ordering transitional semantics do coincide. TI - On Four Partial Ordering Semantics for a Process Calculus UR - http://iospress.metapress.com/content/D6134260XM4L17Q4 IS - 4 ID - eprints360 SP - 349 SN - 1875-8681 JF - Fundamenta Informaticae VL - 27 Y1 - 1996/// A1 - Corradini, Flavio A1 - De Nicola, Rocco AV - none ER -