Modular Counting and Substitution of Structures

  • Authors:
  • E. Specker

  • Affiliations:
  • Eidgenössische Technische Hochschule Zürich, ETH Zentrum, HG, Rämistrasse 101, CH-8092 Zürich (e-mail: specker@math.ethz.ch)

  • Venue:
  • Combinatorics, Probability and Computing
  • Year:
  • 2005

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Abstract

The aim of this paper is to point to a difference between binary and hyperary structures. The modular counting functions of a class of structures defined by a sentence of second-order monadic logic with equality, based on binary relations, are ultimately periodic. However, this is not the case for sentences based on quaternary relations.