Behavioural contracts are formal specifications of interaction protocols between two or more
distributed services. Despite the heterogeneous nature of the formalisms for behavioural …

An approach to the formal description of service contracts is presented in terms of automata.
We focus on the basic property of guaranteeing that in the multi-party composition of …

We investigate the semantic foundations of session types, by revisiting them in the abstract
setting of labelled transition systems. The crucial insight is a simulation relation which …

Abstract We study Lending Petri nets, an extension of Petri nets where places may carry a
negative number of tokens. This allows for modeling contracts where a participant may …

Timed session types formalise timed communication protocols between two participants at
the endpoints of a session. They feature a decidable compliance relation, which generalises …

Today's software systems are highly distributed and interconnected, and they increasingly
rely on communication to achieve their goals; due to their societal importance, security and …

Smart contracts are currently en vogue, thanks to the infrastructure provided by the
blockchain technology. However, their effective use requires that the textual (legalese) …

We address the problem of modelling and verifying contract-oriented systems, wherein
distributed agents may advertise and stipulate contracts, but—differently from most other …

We study compliance relations between behavioural contracts in a syntax independent
setting based on Labelled Transition Systems. We introduce a fixed-point based family of …

In the setting of contract theory, retractable contracts have been defined to formalize binary
session protocols where the partners can go back to certain particular synchronization …