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Lifetime asymptotics of iterated Brownian motion in n

Erkan Nane (2007)

ESAIM: Probability and Statistics

Let τ D ( Z ) be the first exit time of iterated Brownian motion from a domain D n started at z D and let P z [ τ D ( Z ) > t ] be its distribution. In this paper we establish the exact asymptotics of P z [ τ D ( Z ) > t ] over bounded domains as an improvement of the results in DeBlassie (2004) [DeBlassie, Ann. Appl. Prob.14 (2004) 1529–1558] and Nane (2006) [Nane, Stochastic Processes Appl.116 (2006) 905–916], for z D lim t t - 1 / 2 exp 3 2 π 2 / 3 λ D 2 / 3 t 1 / 3 P z [ τ D ( Z ) > t ] = C ( z ) , 
where C ( z ) = ( λ D 2 7 / 2 ) / 3 π ψ ( z ) D ψ ( y ) d y 2 . Here λD is the first eigenvalue of the Dirichlet Laplacian 1 2 Δ in D, and ψ is the eigenfunction corresponding...

Note on type II counter problem

Anatolij Dvurečenskij, Genadij A. Ososkov (1984)

Aplikace matematiky

In the paper the authors investigate the explicit form of the joint Laplace transform of the distances between two subsequent moments f particle registrations by the Type II counter (the counter with prolonged dead time), in the general case, and the generating function of the number of particles arriving during the dead time. They give explicit solutions to the complicated integral equations obtained by L. Takács and R. Pyke, respectively. Moreover, they study the geometric behaviour of the distribution...

On two fragmentation schemes with algebraic splitting probability

M. Ghorbel, T. Huillet (2006)

Applicationes Mathematicae

Consider the following inhomogeneous fragmentation model: suppose an initial particle with mass x₀ ∈ (0,1) undergoes splitting into b > 1 fragments of random sizes with some size-dependent probability p(x₀). With probability 1-p(x₀), this particle is left unchanged forever. Iterate the splitting procedure on each sub-fragment if any, independently. Two cases are considered: the stable and unstable case with p ( x ) = x a and p ( x ) = 1 - x a respectively, for some a > 0. In the first (resp. second) case, since smaller...

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