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Infinite non-conformal iterated function systems

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Abstract

We consider a class of iterated function systems consisting of a countable infinity of non-conformal contractions, extending both the self-affine limit sets of Lalley and Gatzouras as well as the infinite iterated function systems of Mauldin and Urbański. Natural examples include the sets of points in the plane obtained by taking the binary expansion along the vertical and the continued fraction expansion along the horizontal and deleting certain pairs of digits. We prove that the Hausdorff dimension of the limit set is equal to the supremum of the dimensions of compactly supported ergodic measures, which are given by a Ledrappier and Young type formula. In addition we consider the multifractal analysis of Birkhoff averages for countable families of potentials. We obtain a conditional variational principle for the level sets.

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  1. Department of Mathematics, The University of Bristol University Walk, Clifton, Bristol, BS8 1TW, UK

    Henry W. J. Reeve

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Reeve, H.W.J. Infinite non-conformal iterated function systems. Isr. J. Math. 194, 285–329 (2013). https://doi.org/10.1007/s11856-012-0089-x

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  • DOI: https://doi.org/10.1007/s11856-012-0089-x

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