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 …

Causality is often interpreted as establishing dependencies between events. The standard
view is that an event b causally depends on an event a if, whenever b occurs, then a has …

Choreography-based approaches to service composition typically assume that, after a set of
services has been found which correctly play the roles prescribed by the choreography …

Nowadays emerging paradigms are being adopted by several companies, where
applications are built by assembling loosely-coupled distributed components, called …

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

In this thesis we propose a theory of contracts. Contracts are modelled as interacting
processes with an explicit association of obligations and objectives. Obligations are …

We introduce a linear logic for contracts. The logic (called PCLLW) extends intuitionistic
linear affine logic ILLW with a contractual implication connective, along the lines of …