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Displaying similar documents to “Directed animals and gas models revisited.”

Trees and matchings.

Kenyon, Richard W., Propp, James G., Wilson, David B. (2000)

The Electronic Journal of Combinatorics [electronic only]

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Near-minimal spanning trees : a scaling exponent in probability models

David J. Aldous, Charles Bordenave, Marc Lelarge (2008)

Annales de l'I.H.P. Probabilités et statistiques

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We study the relation between the minimal spanning tree (MST) on many random points and the “near-minimal” tree which is optimal subject to the constraint that a proportion of its edges must be different from those of the MST. Heuristics suggest that, regardless of details of the probability model, the ratio of lengths should scale as 1+( ). We prove this in the model of the lattice with random edge-lengths and in the euclidean model.

Random even graphs.

Grimmett, Geoffrey, Janson, Svante (2009)

The Electronic Journal of Combinatorics [electronic only]

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Markov chain model of phytoplankton dynamics

Radosław Wieczorek (2010)

International Journal of Applied Mathematics and Computer Science

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A discrete-time stochastic spatial model of plankton dynamics is given. We focus on aggregative behaviour of plankton cells. Our aim is to show the convergence of a microscopic, stochastic model to a macroscopic one, given by an evolution equation. Some numerical simulations are also presented.