Structure Theorem for (d,g,h)-Maps

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dc.creatorKontorovich, Alex V.
dc.creatorSinai, Yakov G.
dc.date2006-01-25
dc.date.accessioned2026-07-07T06:59:18Z
dc.date.available2026-07-07T06:59:18Z
dc.descriptionThe (3x+1)-Map, T, acts on the set, Pi, of positive integers not divisible by 2 or 3. It is defined by T(x) = (3x+1)/2^k, where k is the largest integer for which T(x) is an integer. The (3x+1)-Conjecture asks if for every x in Pi there exists an integer, n, such that T^n (x) = 1. The Statistical (3x+1)-Conjecture asks the same question, except for a subset of Pi of density 1. The Structure Theorem proven in \cite{sinai} shows that infinity is in a sense a repelling point, giving some reasons to expect that the (3x+1)-Conjecture may be true. In this paper, we present the analogous theorem for some generalizations of the (3x+1)-Map, and expand on the consequences derived in \cite{sinai}. The generalizations we consider are determined by positive coprime integers, d and g, with g > d >= 2, and a periodic function, h(x). The map T is defined by the formula T(x) = (gx+h(gx))/d^k, where k is again the largest integer for which T(x) is an integer. We prove an analogous Structure Theorem for (d,g,h)-Maps, and that the probability distribution corresponding to the density converges to the Wiener measure with the drift log(g) - d/(d-1)log(d) and positive diffusion constant. This shows that it is natural to expect that typical trajectores return to the origin if log(g) - d/(d-1) log(d) <0 and escape to infinity otherwise.
dc.description9 pages
dc.identifierhttps://arxiv.org/abs/math/0601622
dc.identifierhttp://arxiv.org/abs/math/0601622
dc.identifierBulletin of the Brazilian Mathematical Society, Volume 33, Issue 2, Jul 2002, Pages 213 - 224
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/107699
dc.subjectNumber Theory
dc.subjectProbability
dc.subject11B83
dc.titleStructure Theorem for (d,g,h)-Maps
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