منابع مشابه
On : “ Do Sunspots Matter When Spot Market Equilibria Are Unique ? ”
Mas-Colell (1992) conjectured that there could be no sunspot equilibria if the fun damentals of the underlying economy admitted a unique equilibrium. Hens (2000) con structed an example to show that this conjecture was false. A weak form of Mas-Colell’s conjecture is indeed false, but there is an error in Hens’s proof. The first part of this com ment shows the mistake in Hens’s argument, and...
متن کاملSunspots in the Laboratory
We show that extrinsic or non-fundamental uncertainty influences markets in a controlled environment. This work provides the first direct evidence of sunspot equilibria. These equilibria require a common understanding of the semantics of the sunspot variable, and they appear to be sensitive to the flow of information. Extrinsic uncertainty matters when information flows slowly, as in a call mar...
متن کاملSunspots and Temperatures
Power spectrum analyses of temperature series at New York City (1822-1956), the Netherlands (1735-1944), and central England (1698-1955) show that the only significant energy in these spectrums appears at the annual period of 12 months. No significant energy was found corresponding to any known sunspot periodicity. Correlation coefficients between January and July temperatures for the years of ...
متن کاملMagnetic Structure of Sunspots
In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief description of tools that are most commonly employed to infer the magnetic field in the solar atmosphere with emphasis in the photosphere of sunspots. We then address separately the global and local magnetic structure of suns...
متن کاملSunspots, correlation and competition
Correlated equilibria in strategic market games played, simultaneously, by “overlapping generations” of players correspond to sunspot equilibria in the associated, competitive economy. The lower the degree of competition, the larger the range of parameters that allow for effective correlation or endogenous stochastic fluctuations.
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ژورنال
عنوان ژورنال: Theoretical Economics Letters
سال: 2011
ISSN: 2162-2078,2162-2086
DOI: 10.4236/tel.2011.13023