Now showing items 1-3 of 3

    • Agency problems with non-smooth decision profiles: the case of monopoly under product quality 

      Ruiz del Portal, X. (Xavier) (SpringerOpen, 2011)
      A method for dealing with monotonicity constraints in optimal control problems is used to generalize some results in the context of monopoly theory, also extending the generalization to a large family of principal-agent ...
    • Bienestar social e impuesto sobre la renta 

      Ruiz del Portal, X. (Xavier) (Universidad Autónoma de Madrid. Departamento de Análisis Económico; Asociación Cuadernos de Economía, 1986)
      El presente artículo pretende ampliar el modelo original de SANDMO (Journal of Public Economics, 1981 , Vol. 16), relativo a evasión e imposición óptima, en dos direcciones. De un lado, haciendo extensivo el marco de ...
    • Two reasons for not using commodity taxation in the presence of an optimal income tax 

      Ruiz del Portal, X. (Xavier) (Instituto de Estudios Fiscales, 2020)
      This paper presents two arguments in favor of the sole use of an income tax for redistribution purposes. The first is that most findings on nonlinear commodity taxation such as Mirrlees’s formulae for Pareto efficiency, ...