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We consider the problem of finding a measurable unfriendly partition of the vertex set of a locally finite Borel graph on standard probability space. After isolating a sufficient condition for the existence of such a partition, we show how it settles the dynamical analog of the problem (up to weak equivalence) for graphs induced by free, measure-preserving actions of groups with designated finite generating set. As a corollary, we obtain the existence of translation-invariant random unfriendly colorings...
This paper is concerned with lattice-group valued measures for which the sygma-additivity is defined by means of the order convergence properties. In the first section we treat the analogues for such order-measures with values in a Dedekind complete lattice-group of the Jordan, Lebesgue and Yosida-Hewitt descompositions. The second section deals with the construction of an integral for functions with respect to an order-measure, both taking their values in a Dedekind sygma-complete lattice-ring....
Étant donné un problème des moments classique de Hamburger, supposé indéterminé, on montre qu’une mesure solution est -canonique (N. I. Akhiezer, Oliver and Boyd, Edinburgh, 1965, p. 115) si et seulement si l’adhérence de l’espace des polynômes est exactement de codimension dans l’espace de Hilbert . On déduit de là des résultats de perturbation de mesures -canoniques généralisant ceux de C. Berg et J.-P. R. Christensen (Ann. Inst. Fourier, 31-3 (1981), 99–114), établis pour le cas des...
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