  This paper presents a study of causality in a reversible, concurrent setting.
There exist various notions of causality in pi-calculus, which differ in the
treatment of parallel extrusions of the same name. In this paper we present a
uniform framework for reversible pi-calculi that is parametric with respect to
a data structure that stores information about an extrusion of a name.
Different data structures yield different approaches to the parallel extrusion
problem. We map three well-known causal semantics into our framework. We show
that the (parametric) reversibility induced by our framework is causally-
consistent and prove a causal correspondence between an appropriate instance of
the framework and Boreale and Sangiorgi's causal semantics.

Logic in Computer Science