• Bernoulli
  • Volume 21, Number 4 (2015), 2457-2483.

A new class of large claim size distributions: Definition, properties, and ruin theory

Sergej Beck, Jochen Blath, and Michael Scheutzow

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We investigate a new natural class $\mathcal{J}$ of probability distributions modeling large claim sizes, motivated by the ‘principle of one big jump’. Though significantly more general than the (sub-)class of subexponential distributions $\mathcal{S}$, many important and desirable structural properties can still be derived. We establish relations to many other important large claim distribution classes (such as $\mathcal{D}$, $\mathcal{S}$, $\mathcal{L}$, $\mathcal{K}$, $\mathcal{OS}$ and $\mathcal{OL}$), discuss the stability of $\mathcal{J}$ under tail-equivalence, convolution, convolution roots, random sums and mixture, and then apply these results to derive a partial analogue of the famous Pakes–Veraverbeke–Embrechts theorem from ruin theory for $\mathcal{J}$. Finally, we discuss the (weak) tail-equivalence of infinitely-divisible distributions in $\mathcal{J}$ with their Lévy measure.

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Bernoulli, Volume 21, Number 4 (2015), 2457-2483.

Received: July 2013
Revised: February 2014
First available in Project Euclid: 5 August 2015

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Zentralblatt MATH identifier

heavy-tailed random walks ruin theory subexponential


Beck, Sergej; Blath, Jochen; Scheutzow, Michael. A new class of large claim size distributions: Definition, properties, and ruin theory. Bernoulli 21 (2015), no. 4, 2457--2483. doi:10.3150/14-BEJ651.

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