10 resultados para G-extremal processes

em Bulgarian Digital Mathematics Library at IMI-BAS


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2000 Mathematics Subject Classification: 60G70, 60G18.

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We study the limit behaviour of the sequence of extremal processes under a regularity condition on the norming sequence ζn and asymptotic negligibility of the max-increments of Yn.

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2000 Mathematics Subject Classification: Primary 60G51, secondary 60G70, 60F17.

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2000 Mathematics Subject Classification: 60G70, 60F05.

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In this note we discuss upper and lower bound for the ruin probability in an insurance model with very heavy-tailed claims and interarrival times.

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2000 Mathematics Subject Classification: 62P10, 92C20

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In this paper, we indicate how integer-valued autoregressive time series Ginar(d) of ordre d, d ≥ 1, are simple functionals of multitype branching processes with immigration. This allows the derivation of a simple criteria for the existence of a stationary distribution of the time series, thus proving and extending some results by Al-Osh and Alzaid [1], Du and Li [9] and Gauthier and Latour [11]. One can then transfer results on estimation in subcritical multitype branching processes to stationary Ginar(d) and get consistency and asymptotic normality for the corresponding estimators. The technique covers autoregressive moving average time series as well.

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2000 Mathematics Subject Classification: 60G70, 60F12, 60G10.

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ACM Computing Classification System (1998): G.1.1, G.1.2.

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2000 Mathematics Subject Classification: Primary 60J80, Secondary 60G99.