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Partition zeta functions, multifractal spectra, and tapestries of complex dimensions

2010/07/08 by Ellis, Kate E., Lapidus, Michel L., Mackenzie, Michael C. +1
#28A12 #28A78 #28A80. Secondary: 28A75 #28C15 #Dynamical Systems (math.DS) #FOS: Mathematics #FOS: Physical sciences #Mathematical Physics (math-ph) #Number Theory (math.NT) #Primary: 11M41

paper · doi:10.48550/arxiv.1007.1467

Abstract

For a Borel measure and a sequence of partitions on the unit interval, we define a multifractal spectrum based on coarse Holder regularity. Specifically, the coarse Holder regularity values attained by a given measure and with respect to a sequence of partitions generate a sequence of lengths (or rather, scales) which in turn define certain Dirichlet series, called the partition zeta functions. The abscissae of convergence of these functions define a multifractal spectrum whose concave envelope is the (geometric) Hausdorff multifractal spectrum which follows from a certain type of Moran construction. We discuss at some length the important special case of self-similar measures associated with weighted iterated function systems and, in particular, certain multinomial measures. Moreover, our multifractal spectrum is shown to extend to a tapestry of complex dimensions for two specific atomic measures.

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