We study a class of geometric Lorenz flows, introduced independently by Afrăımovič, Bykov & Sil′nikov and by Guckenheimer & Williams, and give a verifiable condition for such flows to be mixing. As a… (More)

The effect of environmental heterogeneity on spatial spread of invasive species has received little attention in the literature. Altering landscape heterogeneity may be a suitable strategy to control… (More)

For non markovian, piecewise monotonic maps of the interval associated to a potential, we prove that the law of the entrance time in a cylinder, when renormalized by the measure of the cylinder,… (More)

Given a piecewise invertible map T : X → X and a weight g : X →]0,∞[, a conformal measure ν is a probability measure on X such that, for all measurable A ⊂ X with T : A → TA invertible, ν(TA) = λ ∫

To model the invasion of Prunus serotina invasion within a real forest landscape we built a spatially explicit, non-linear Markov chain which incorporated a stage-structured population matrix and… (More)

In this article we study the continuity properties of trajec-tories for some random series of functions, ∞ k=0 a k f (αX k (ω)) where (a k) k0 is a complex sequence, (X k) k0 is a sequence of real… (More)

Common assumptions on the source producing the words inserted in a suffix trie with n leaves lead to a log n height and saturation level. We provide an example of a suffix trie whose height increases… (More)