Matías Núñez

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This work provides necessary and sufficient conditions for the dominance solvability of approval voting games. Our conditions are very simple since they are based on the approval relation, a binary relation between the alternatives. We distinguish between two sorts of dominance solvability and prove that the most stringent one leads to the election of the(More)
In this paper, new results are provided in the Poisson-Myerson framework. These results are shown to be helpful in the study of approval voting. Indeed, the Magnitude Equivalence Theorem (MET) substantially reduces the complexity of computing the magnitudes of pivotal events. An example is provided that contrasts with Laslier (2004) results concerning(More)
If voters vote strategically, is it useful to offer them the possibility of expressing nuanced opinions? Say that a ballot is overstating if it is neither abstention-like nor can be expressed as a mixture of the available ballots. The paper shows that when two additive voting rules share the same (up to an affine transformation) set of overstating ballots,(More)
Empiriquement, on observe que la majorité des Etats a fait le choix d'un système d'imposition progressif. Pourtant, le fondement théorique de ce choix n'est pas évident. Si l'on interprète le système d'imposition appliquée comme le résultat d'un jeu entre deux partis politiques Downsiens, le fait que la majorité de la population soit relativement pauvre(More)
Using calculations from first principles and the concept of layer polarization, we have elucidated the nanoscale organization and local polarization in ferroelectric thin films between metallic contacts. The profile of the local polarization for different film thicknesses unveils a peculiar spatial pattern of atomic layers with uncompensated dipoles in what(More)
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