We study the relative expressive power of Fusion and pi-calculus. Fusion is commonly regarded as a generalisation of pi-calculus. Actually, we prove that there is no uniform fully abstract embedding of pi-calculus into Fusion. This fact motivates the introduction of a new calculus, D-Fusion, with two binders, λ and ν. We show that D-Fusion is strictly more expressive than both pi-calculus and Fusion. The expressiveness gap is further clarified by the existence of a fully abstract encoding of mixed guarded choice into the choice-free fragment of D-Fusion.
D-Fusion: A Distinctive Fusion Calculus / M. BOREALE; M. G. BUSCEMI; U. MONTANARI. - STAMPA. - (2004), pp. 296-310. [10.1007/978-3-540-30477-7_20]
D-Fusion: A Distinctive Fusion Calculus
BOREALE, MICHELE;
2004
Abstract
We study the relative expressive power of Fusion and pi-calculus. Fusion is commonly regarded as a generalisation of pi-calculus. Actually, we prove that there is no uniform fully abstract embedding of pi-calculus into Fusion. This fact motivates the introduction of a new calculus, D-Fusion, with two binders, λ and ν. We show that D-Fusion is strictly more expressive than both pi-calculus and Fusion. The expressiveness gap is further clarified by the existence of a fully abstract encoding of mixed guarded choice into the choice-free fragment of D-Fusion.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.