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Asymptotic density in quasi-logarithmic additive number systems

Published online by Cambridge University Press:  01 March 2008

BRUNO NIETLISPACH*
Affiliation:
Institute of Mathematics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland. e-mail: bruno.nietlispach@math.uzh.ch

Abstract

We show that in quasi-logarithmic additive number systems all partition sets have asymptotic density, and we obtain a corresponding monadic second-order limit law for adequate classes of relational structures. Our conditions on the local counting function p(n) of the set of irreducible elements of allow situations which are not covered by the density theorems of Compton [6] and Woods [15]. We also give conditions on p(n) which are sufficient to show the assumptions of Compton's result are satisfied, but which are not necessarily implied by those of Bell and Burris [2], Granovsky and Stark [8] or Stark [14].

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 2008

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