Palavras-chave
Piero. Equilíbrio geral. Gravitação. Estabilidade
Como Citar
Resumo
Este artigo contém uma breve avaliação comparativa da questão da estabilidade nas abordagens clássica e neoclássica. A ênfase estará nos conceitos de estabilidade que são relevantes para essas diferentes abordagens nas implicações de certos resultados teóricos recentes obtidos pelos seguidores clássicos de Sraffa. Discutimos três perguntas: 1. As críticas às condições de estabilidade são relevantes ou tudo que importa são as “provas de existência”? 2. Qual a diferença entre a crítica de Sraffa e as dificuldades com os “efeitos renda” admitidas pelos neoclássicos? 3. Finalmente, se os sraffianos querem criticar a teoria neoclássica no que se refere à estabilidade, então o que dizer da estabilidade de suas próprias posições de longo prazo clássicas?
Abstract
This paper contains a brief comparative evaluation of the question of stability in classical and neoclassical theories. The emphasis will be on the concepts of stability which are relevant for these different theories and on the implications of certain recent theoretical results obtained by the Classical followers of Sraffa. We discuss three questions: 1. Is the critique of stability conditions relevant or are the “existence proofs” all that matters? 2. What is the difference between the Sraffian critique and the difficulties with “income effects” admitted by the neoclassics? 3. Finally, if the Sraffians want to criticise neoclassical theory in what regards stability what about the stability of their own classical long period positions?
Key words: Sraffa, Piero. General equilibrium. Gravitation; Stability
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