This article uses empirical evidence on networks of voluntary organizations mobilizing on ethnic minority, environmental, and social exclusion issues in two British cities, to differentiate between social movement processes and other, cognate collective action dynamics. Social movement processes are identified as the building and reproducing of dense informal networks between a multiplicity of ...

Two currently active strands of research on logics for multi-agent systems are dynamic epistemic logic, focusing on the epistemic consequences of actions, and logics of coalitional ability, focusing on what coalitions of agents can achieve by cooperating strategically. In this paper we make a first attempt to bridge these topics by considering the question: “what can a coalition achieve by publ...

Coalition Logic (CL) is one of the most important formalisms for specification and verification of game-like multi-agent systems. Several extensions of the logic have been studied in the literature. These extensions are usually fusions (independent joins) of CL with other modal logics (e.g., temporal, epistemic, dynamic, etc.), and they are generally propositional. In this paper, we propose a g...

We analyze a situation where individuals and coalitions can obtain effective property rights over a resource by means of an exclusion contest. Coalitions face a trade-off when they decide to incorporate new members: Big groups control the resource more likely but individual property rights are more diluted. Under cooperative explotation of the resource the grand coalition is the efficient parti...

Are central motor networks composed of task-specific dedicated neurons or are the neurons multifunctional, entering shifting coalitions for particular tasks to form different functional networks? Recent experiments elegantly indicate the latter.

We give counterexamples to a conjecture of Benny Chor and another of the second author, both from the late 80s, by exhibiting functions for which the influences of large coalitions are unexpectedly small relative to the expectations of the functions.

If modal logics for coalitions need to be applied, one must know how to translate coalition power into agents’ actions. To these days, the connection between coalition power and the actions of the agents has not been studied in the literature. This paper fills the gap by presenting a semantic translation from Pauly’s Coalition Logic to a (fragment of an) action logic. The interpretation of the ...