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Riesz measures and Wishart laws associated to quadratic maps

Abstract : We introduce a natural definition of Riesz measures and Wishart laws associated to an $\Omega$-positive (virtual) quadratic map, where $\Omega \subset \real^n$ is a regular open convex cone. We give a general formula for moments of the Wishart laws. Moreover, if the quadratic map has an equivariance property under the action of a linear group acting on the cone $\Omega$ transitively, then the associated Riesz measure and Wishart law are described explicitly by making use of theory of relatively invariant distributions on homogeneous cones.
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Preprints, Working Papers, ...
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Contributor : Piotr Graczyk Connect in order to contact the contributor
Submitted on : Thursday, June 30, 2011 - 4:58:40 PM
Last modification on : Wednesday, October 20, 2021 - 3:18:39 AM
Long-term archiving on: : Saturday, October 1, 2011 - 2:26:50 AM


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  • HAL Id : hal-00605146, version 1
  • ARXIV : 1107.0147



Piotr Graczyk, Ishi Hideyuki. Riesz measures and Wishart laws associated to quadratic maps. 2011. ⟨hal-00605146⟩



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