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Strong convergence of multivariate maxima

Published online by Cambridge University Press:  04 May 2020

Michael Falk*
Affiliation:
University of Würzburg
Simone A. Padoan*
Affiliation:
Bocconi University of Milan
Stefano Rizzelli*
Affiliation:
École Polytechnique Fédérale de Lausanne
*
*Postal address: Chair of Mathematics VIII, Emil-Fischer-Str. 30, 97074 Würzburg, Germany. Email address: [email protected]
**Postal address: Department of Decision Sciences, via Roentgen, 1 20136 Milan, Italy. Email address: [email protected]
***Postal address: EPFL-SB-MATH-STAT, MA B1 507, Station 8, 1015 Lausanne, Switzerland. Email address: [email protected]

Abstract

It is well known and readily seen that the maximum of n independent and uniformly on [0, 1] distributed random variables, suitably standardised, converges in total variation distance, as n increases, to the standard negative exponential distribution. We extend this result to higher dimensions by considering copulas. We show that the strong convergence result holds for copulas that are in a differential neighbourhood of a multivariate generalised Pareto copula. Sklar’s theorem then implies convergence in variational distance of the maximum of n independent and identically distributed random vectors with arbitrary common distribution function and (under conditions on the marginals) of its appropriately normalised version. We illustrate how these convergence results can be exploited to establish the almost-sure consistency of some estimation procedures for max-stable models, using sample maxima.

Type
Research Papers
Copyright
© Applied Probability Trust 2020

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