(Hens & Rieger [938], Corollary 2.31) Suppose that the expected utility function (mathbb{E}[u(tilde{x})]) of a risk averse...
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(Hens \& Rieger [938], Corollary 2.31) Suppose that the expected utility function \(\mathbb{E}[u(\tilde{x})]\) of a risk averse agent can be represented through a continuous mean-variance function \(V\left(\mathbb{E}[\tilde{x}], \sigma^{2}(\tilde{x})\right)\), strictly increasing in the first argument, for any \(\sigma^{2}(\tilde{x})\). Then the preference relation represented by \(\mathbb{E}[u(\tilde{x})]\) does not satisfy the independence axiom.
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Financial Markets Theory Equilibrium Efficiency And Information
ISBN: 9781447174042
2nd Edition
Authors: Emilio Barucci, Claudio Fontana
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