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The number of open paths in oriented percolation


We study the number $N_n$ of open paths of length $n$ in supercritical oriented percolation on $\Zd \times \N$, with $d \ge 1$. We prove that on the percolation event $\{\inf N_n>0\}$, $N_n^{1/n}$ almost surely converges to a positive deterministic constant. We also study the existence of directional limits. The proof relies on the introduction of adapted sequences of regenerating times, on subadditive arguments and on the properties of the coupled zone in supercritical oriented percolation.
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Dates and versions

hal-00916083 , version 1 (09-12-2013)
hal-00916083 , version 2 (27-01-2015)
hal-00916083 , version 3 (04-03-2015)



Olivier Garet, Jean-Baptiste Gouéré, Régine Marchand. The number of open paths in oriented percolation. 2013. ⟨hal-00916083v3⟩
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