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Missing equation in Piketty’s r-g theory

Author

Listed:
  • Yasunori Fujita
Abstract
Although Thomas Piketty has revolutionized our understanding of inequality, logic behind his r-g theory is not developed formally in his researches. The present paper, by finding out the missing part of Piketty’s r-g theory, present a complete version of Piketty’s framework. It is revealed that necessary and sufficient condition for the r-g theory is S Y ( t )+ A Y ( t )= C F ( t ). That is, savings in a broad sense (left hand side) is equal to the consumption using financial capital (right hand side). We also reveal that the problem is not in the Second Fundamental Law of Capitalism, but in the formulation of capital accumulation dynamics. Furthermore, it is demonstrated that the two Fundamental Laws of Capitalism are not necessary for deriving the r-g theory.

Suggested Citation

  • Yasunori Fujita, 2015. "Missing equation in Piketty’s r-g theory," Economics and Business Letters, Oviedo University Press, vol. 4(2), pages 57-62.
    • Handle: RePEc:ove:journl:aid:10637
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    File URL: https://reunido.uniovi.es/index.php/EBL/article/view/10637
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    References listed on IDEAS

    as
    1. Anthony B. Atkinson & Thomas Piketty & Emmanuel Saez, 2011. "Top Incomes in the Long Run of History," Journal of Economic Literature, American Economic Association, vol. 49(1), pages 3-71, March.
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    13. Facundo Alvaredo & Anthony Atkinson & Thomas Piketty & Emmanuel Saez, 2013. "The Top 1% in International and Historical Perspective," Post-Print halshs-00847231, HAL.
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