Zeta-Dimension

  • Authors:
  • David Doty;Xiaoyang Gu;Jack H. Lutz;Elvira Mayordomo;Philippe Moser

  • Affiliations:
  • Department of Computer Science, Iowa State University, Ames, IA;Department of Computer Science, Iowa State University, Ames, IA;Department of Computer Science, Iowa State University, Ames, IA;Departamento de Informática e Ingeniería de Sistemas, Universidad de Zaragoza, Zaragoza, Spain;Department of Computer Science, Iowa State University, Ames, IA

  • Venue:
  • MFCS'05 Proceedings of the 30th international conference on Mathematical Foundations of Computer Science
  • Year:
  • 2005

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Abstract

The zeta-dimension of a set A of positive integers is Dimζ(A)=inf{s | ζA(s) where $\zeta_A(s)=\sum_{n\in A}n^{-s}.$ Zeta-dimension serves as a fractal dimension on ℤ+ that extends naturally and usefully to discrete lattices such as ℤd, where d is a positive integer. This paper reviews the origins of zeta-dimension (which date to the eighteenth and nineteenth centuries) and develops its basic theory, with particular attention to its relationship with algorithmic information theory. New results presented include a gale characterization of zeta-dimension and a theorem on the zeta-dimensions of pointwise sums and products of sets of positive integers.