Itens para a visualização no momento 1-9 of 9

    • Bayesian foundations of Nash equilibrium behaviour 

      Werlang, Sérgio Ribeiro da Costa
      1986-04-01
      This is part of a larger project to investigate the Bayesian foundations of non-cooperative solution concepts. Elsewhere Bernheim and Pearce prove that common knowledge of Bayesian rationality is not enough to justify the ...
    • Competição monopolística e suas relações com competição perfeita 

      Werlang, Sérgio Ribeiro da Costa
      1982-11-02
      This article discusses the properties of monopolistic competitive economies with many economic agents. In the context of general equilibrium, the idea of inverse correspondence of generalized demand is treated, as is the ...
    • The consistency of welfare judgments with a representative consumer 

      Dow, James; Werlang, Sérgio Ribeiro da Costa
      1988
      It is common practice to use the representative consumer hypothesis without specifically assuming any of the sufficient conditions under which one will exist. We show, first, that it is possible for the utility of the ...
    • Cournot competition under Knightian uncertainty 

      Boff, Hugo Pedro; Werlang, Sérgio Ribeiro da Costa
      1998-11-02
      This article applies a theorem of Nash equilibrium under uncertainty (Dow & Werlang, 1994) to the classic Cournot model of oligopolistic competition. It shows, in particular, how one can map all Cournot-Nash equilibria ...
    • Determinacy of equilibria in nonsmooth economies 

      Pascoa, Mario Rui; Werlang, Sérgio Ribeiro da Costa
      1999-11
      Concavifiable preferences are representable by a function which is twice differentiable almost everywhere, by theorem of Alexandroff [Alexandroff, A.D., 1939. Almost Everywhere Existence of Second Differentials of Convex ...
    • Finanças: uma resenha de quatro livros 

      Werlang, Sérgio Ribeiro da Costa
      1991-11-02
      A teoria das decisões financeiras, ou teoria das finanças, ou simplesmente finanças, é de longa data objeto de estudo de renomados economistas, dentre eles Kenneth Arrow. A premiação do Nobel de 1990, dado a três economistas ...
    • A Keynesian model of nominal wage rigidity 

      Werlang, Sérgio Ribeiro da Costa
      1990-04-01
      We present a Model that reflects Keynes' intuition concerning nominal wage rigidity: workers like to keep their relative status on society. Several results are presented, including the analysis of the influence of risk ...
    • Subadditive probabilities and portfolio inertia 

      Simonsen, Mario Henrique; Werlang, Sérgio Ribeiro da Costa
      1991-04-01
      We show that in the presence of uncertainty (in the sense of Knight), as axiomatized by Schmeidler (1982, 1984) and Gilboa (1987) (as opposed to the classical view of Savage (1954)) one may obtain portfolio inertia with ...
    • Support restrictions and sequential equilibria 

      Madrigal, Vicente; Tan, Tommy Chin-Chiu; Werlang, Sérgio Ribeiro da Costa
      1987
      We consider equilibrium concepts which require that the support of beliefs at an information set be contained in the supports of beliefs at preceding information sets. We analyze by means of an example why such equilibria ...