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The aim of this paper is to analyse the impact of heterogeneous beliefs in an otherwise standard competitive complete market economy. The construction of a consensus probability belief, as well as a consensus consumer, is shown to be valid modulo an aggregation bias, which takes the form of a...
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[eng] Beliefs' heterogeneity, risk premium and volatility . This article analyses introducing of subjective and heterogeneous beliefs in traditional equilibrium model. The authors assume heterogeneous beliefs and answer the questions : 1 - is there a consensual belief which implies same...
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In the context of an incomplete market or of imperfect information, it is well known that the arbitrage approach does not enable us to obtain a unique fair price for all contingent claims but only a fair pricing interval, which is known to be too large to be of great interest. We present here a...
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