many well-known results from the contest literature can be obtained by varying the structure of the network. Our framework …

This paper proposes new centrality measures to characterise the 'key class', when agents in a network are sorted into … role-equivalent classes, such that its removal results in an optimal change in the network activity. The notion of role … theoretical applicability. Players in the network engage in a non-cooperative game with local payoff complementarities. We …

This paper presents a model of local network effects in which agents connected by a social network each value the …-Nash equilibria of this network game are in monotone strategies, can be strictly Pareto-ranked based on a scalar neighbor … which the social network is an instance of a Poisson random graph, when it is a complete graph, a standard model of network …

In this paper we introduce a stochastic network formation model where agents choose both actions and links. Neighbors … in the network benefit from each other's action levels through local complementarities and there exists a global …

efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core … counterfactual analyses, taking into account that the network and production can dynamically adjust to shocks or policy interventions ….6%. Our study further reveals that when ignoring the network structure the impact of firm exit or mergers is significantly …

neighbors in the social network. The same activities often exert externalities that cumulate in "stocks" affecting agents … network of social relations, as agents display strategic substitution with distance-two neighbors. We show that behavior is … behavior and key-players tend to move to the periphery of the network, and we discuss the effect of close-knit communities and …

This paper provides a game-theoretic model of network formation with a continuous effort choice. Efforts are strategic … complements for direct neighbors in the network and display global substitution/congestion effects. We show that if the parameter … links according to a network cost function. Again all socially optimal configurations are such that the network is a nested …