Semivalues: power,potential and multilinear extensions

The notions of power and potential, both defined for any semivalue, give rise to two endomorphisms of the vector space of all cooperative games on a given player set. Several properties of these linear mappings are stated and their action on unanimity games is emphasized. We also relate in both cases the multilinear extension of the image game to the multilinear extension of the original game.Cooperative game; Semivalue; Power; Potential; Multilinear extension

Civil Wars and Criminality: The Spillover of Violence

In this paper I address a negative externality of internal conflicts for neighboring countries: the rise in criminality associated with a civil conflict in a nearby state. I propose that two mechanisms may cause an increase in crime rates in countries located in the neighborhood of a war-torn country. First, the refugee flow leads to social tensions between the local population and the refugee groups. Second, the economic hardship created by the civil war in the neighboring country (disruption of trade, departure of investors). I test my hypotheses with panel data from the UN World Surveys on Crime Trends and Criminal Justice Systems (1970-1994). I run a simple fixed effects model and several robustness checks, and find empirical support for my arguments

Discurso de contestación al de ingreso en la Academia del Excmo. Sr. D. Félix Pons Irazazabal

Abstract not availabl

In memoriam (en la muerte del Ilmo. Señor Don Francisco Noguera Roig)

Abstract not availabl

Contestación al discurso de Tomas Mir de la Fuente

Abstract not availabl

In memoriam

Abstract not availabl

Presidential debates and electoral preferences in weakly institutionalised democracies: evidence from 32 Latin American elections

Previous research has shown that presidential debates have "minimal effects" on aggregate electoral preferences because they mainly reinforce people's pre-existing political preferences. However, most of what we know about the behavioural effects of debates comes from research conducted in the United States and other institutionalised democracies. We re-evaluate the effects of debates on electoral preferences by focusing on Latin American elections. Given higher levels of electoral volatility, weaker partisan brands, lower partisanship, and more personalised voter linkages, we expect that debates play a significant role in shaping vote choice in Latin America. We test these expectations by conducting an analysis of presidential debates on aggregated vote preferences in thirty-two elections across fourteen Latin American countries from 2002 to 2019. Our results show that presidential debates shape electoral preferences in countries with weakly institutionalised party systems