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- W2134744124 abstract "Abstract This paper deals with multidimensional dynamic risk measures induced by conditional g ‐expectations. A notion of multidimensional g ‐expectation is proposed to provide a multidimensional version of nonlinear expectations. By a technical result on explicit expressions for the comparison theorem, uniqueness theorem, and viability on a rectangle of solutions to multidimensional backward stochastic differential equations, some necessary and sufficient conditions are given for the constancy, monotonicity, positivity, and translatability properties of multidimensional conditional g ‐expectations and multidimensional dynamic risk measures; we prove that a multidimensional dynamic g ‐risk measure is nonincreasingly convex if and only if the generator g satisfies a quasi‐monotone increasingly convex condition. A general dual representation is given for the multidimensional dynamic convex g ‐risk measure in which the penalty term is expressed more precisely. It is shown that model uncertainty leads to the convexity of risk measures. As to applications, we show how this multidimensional approach can be applied to measure the insolvency risk of a firm with interacting subsidiaries; optimal risk sharing for ‐tolerant g ‐risk measures, and risk contribution for coherent g ‐risk measures are investigated. Insurance g ‐risk measure and other ways to induce g ‐risk measures are also studied at the end of the paper." @default.
- W2134744124 created "2016-06-24" @default.
- W2134744124 creator A5041700261 @default.
- W2134744124 date "2014-05-20" @default.
- W2134744124 modified "2023-10-03" @default.
- W2134744124 title "MULTIDIMENSIONAL DYNAMIC RISK MEASURE VIA CONDITIONAL <i>g</i> -EXPECTATION" @default.
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- W2134744124 doi "https://doi.org/10.1111/mafi.12062" @default.
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