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Pré-Publication, Document De Travail Année : 2018

Short proofs in extrema of spectrally one sided Lévy processes

Résumé

We provide short and simple proofs of the continuous time ballot theorem for processes with cyclically interchangeable increments and Kendall's identity for spectrally positive Lévy processes. We obtain the later result as a direct consequence of the former. The ballot theorem is extended to processes having possible negative jumps. Then we prove through straightforward arguments based on the law of bridges and Kendall's identity, Theorem 2.4 in [19] which gives an expression for the law of the supremum of spectrally positive Lévy processes. An analogous formula is obtained for the supremum of spectrally negative Lévy processes.
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Dates et versions

hal-01769282 , version 1 (17-04-2018)

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  • HAL Id : hal-01769282 , version 1

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Loïc Chaumont, Jacek Małecki. Short proofs in extrema of spectrally one sided Lévy processes. 2018. ⟨hal-01769282⟩
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