English

On the small-time behavior of subordinators

Statistics Theory 2012-07-26 v1 Statistics Theory

Abstract

We prove several results on the behavior near t=0 of YttY_t^{-t} for certain (0,)(0,\infty)-valued stochastic processes (Yt)t>0(Y_t)_{t>0}. In particular, we show for L\'{e}vy subordinators that the Pareto law on [1,)[1,\infty) is the only possible weak limit and provide necessary and sufficient conditions for the convergence. More generally, we also consider the weak convergence of tL(Yt)tL(Y_t) as t0t\to0 for a decreasing function LL that is slowly varying at zero. Various examples demonstrating the applicability of the results are presented.

Cite

@article{arxiv.1207.5902,
  title  = {On the small-time behavior of subordinators},
  author = {Shaul K. Bar-Lev and Andreas Löpker and Wolfgang Stadje},
  journal= {arXiv preprint arXiv:1207.5902},
  year   = {2012}
}

Comments

Published in at http://dx.doi.org/10.3150/11-BEJ363 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)

R2 v1 2026-06-21T21:41:05.290Z