Large quantities of software, ranging from operating systems to web servers to games, are now available as “open source software” or “free software”. In many cases, this software is backed by large profit seeking corporations such as IBM. Traditional economic analysis is used to identify...

In the 1970s, Thomas C. Schelling proposed a model which claimed to show that a high degree of spatial segregation can result from individual preferences which do not in themselves aim to achieve such a degree of collective segregation. A perverse effect seems therefore to occur. However, the...

We survey the literature on social networks by putting together the economics, sociological and physics/applied mathematics approaches, showing their similarities and differences. We expose, in particular, the two main ways of modeling network formation. While the physics/applied mathematics...

Members of an illegal armed organization reveal their desertion minimum values in reaction to the incentives offered by a government. Depending on the organization’s network structure, the desertion of an individual member will unleash a contagion process that will destroy the local network at...

This study examines entry strategies in the Canadian wireless discount market. Analysis was mainly focused on the incumbents' strategic choices when faced with the threat of sequential entry. The main model used is Fudenberg and Tirole's taxonomy of business strategies that is studied in the...

This paper proposes a central idea in diffusion research is that influential –a minority of individuals who influence an exceptional number of their peers- are important to formation of public opinion. Here we examine this idea, which we call the “influential hypothesis”, using the...

This article exposes key aspects for the theoretical analysis of the political reality in Colombia in moments of severe derived social uncertainty of the conflict and the fork of serious dilemmas on the institutional order that comes from political campaigns influenced decisively by the...

Considering intrinsic valuation of software developers as the main motive for participating in open source projects, we examine the (Nash) equilibrium effort levels of the software developers in implementing projects that follow one of the three different technologies: the summation, the...