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Article dans une revue Mathematical Finance Année : 2010

Overlapping sets of priors and the existence of efficient allocations and equilibria for risk measures

Résumé

The overlapping expectations and the collective absence of arbitrage conditions introduced in the economic literature to insure existence of Pareto optima and equilibria with short-selling when investors have a single belief about future returns, is reconsidered. Investors use measures of risk. The overlapping sets of priors and the Pareto equilibrium conditions introduced by Heath and Ku for coherent risk measures are respectively reinterpreted as a weak no-arbitrage and a weak collective absence of arbitrage conditions and shown to imply existence of Pareto optima and Arrow-Debreu equilibria.
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Dates et versions

halshs-00308530, version 1 (30-07-2008)

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Rose-Anne Dana, Cuong Le Van. Overlapping sets of priors and the existence of efficient allocations and equilibria for risk measures. Mathematical Finance, 2010, 20 (3), pp.327-339. ⟨10.1111/j.1467-9965.2010.00402.x⟩. ⟨halshs-00308530⟩
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