Abstract
Using Tukia’s method for representing a quasisymmetric function as a quasisymmetric sieve, we generalize his modification to the Salem scheme and find a sufficient condition for the collection of functions that realize a structure parametrization of a graph-directed function system of a particular form (a one-dimensional multizipper) to consist of quasisymmetric functions. We give an asymptotically sharp estimate for the quasisymmetry coefficient of these functions in terms of the dilation coefficients of the mappings constituting a given multizipper, which yields a substantially more general method for constructing quasisymmetric functions than Tukia’s construction.
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Original Russian Text Copyright © 2009 Aseev V. V.
The author was supported by the Russian Foundation for Basic Research (Grants 09-01-90202-Monga and 09-01-98-001).
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Translated from Sibirskiĭ Matematicheskiĭ Zhurnal, Vol. 50, No. 6, pp. 1203–1215, November–December, 2009.
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Aseev, V.V. Constructing quasisymmetric functions via graph-directed iterated function systems. Sib Math J 50, 947–957 (2009). https://doi.org/10.1007/s11202-009-0105-5
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DOI: https://doi.org/10.1007/s11202-009-0105-5