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Asymptotics of counts of small components in random structuresand models of coagulation-fragmentation

Published online by Cambridge University Press:  03 June 2013

Boris L. Granovsky
Boris L. Granovsky*
Affiliation:
Department of Mathematics, Technion-Israel Institute of Technology, 32000 Haifa, Israel. [email protected]
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Abstract

We establish necessary and sufficient conditions for the convergence (in the sense offinite dimensional distributions) of multiplicative measures on the set of partitions. Themultiplicative measures depict distributions of component spectra of random structures andalso the equilibria of classic models of statistical mechanics and stochastic processes ofcoagulation-fragmentation. We show that the convergence of multiplicative measures isequivalent to the asymptotic independence of counts of components of fixed sizes in randomstructures. We then apply Schur’s tauberian lemma and some results from additive numbertheory and enumerative combinatorics in order to derive plausible sufficient conditions ofconvergence. Our results demonstrate that the common belief, that counts of components offixed sizes in random structures become independent as the number of particles goes toinfinity, is not true in general.

Keywords

Multiplicative measures on the set of partitionsrandom structurescoagulation-fragmentation processesSchur’s lemmamodels of ideal gas
Type
Research Article
Information
ESAIM: Probability and Statistics , Volume 17 , 2013 , pp. 531 - 549
Copyright
© EDP Sciences, SMAI, 2013

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