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TWO PROBLEMS CONCERNING IRREDUCIBLE ELEMENTS IN RINGS OF INTEGERS OF NUMBER FIELDS

Part of: Algebraic number theory: global fields Multiplicative number theory

Published online by Cambridge University Press:  02 March 2017

PAUL POLLACK  and
LEE TROUPE
PAUL POLLACK
Affiliation:
Department of Mathematics, Boyd Graduate Studies Research Center, University of Georgia, Athens, GA 30602, USA email pollack@math.uga.edu
LEE TROUPE*
Affiliation:
Department of Mathematics, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada email ltroupe@math.ubc.ca
*
✉pollack@math.uga.edu
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Abstract

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Let $K$ be a number field with ring of integers $\mathbb{Z}_{K}$. We prove two asymptotic formulas connected with the distribution of irreducible elements in $\mathbb{Z}_{K}$. First, we estimate the maximum number of nonassociated irreducibles dividing a nonzero element of $\mathbb{Z}_{K}$ of norm not exceeding $x$ (in absolute value), as $x\rightarrow \infty$. Second, we count the number of irreducible elements of $\mathbb{Z}_{K}$ of norm not exceeding $x$ lying in a given arithmetic progression (again, as $x\rightarrow \infty$). When $K=\mathbb{Q}$, both results are classical; a new feature in the general case is the influence of combinatorial properties of the class group of $K$.

Keywords

irreduciblenumber fieldfactorisationray classDavenport constant

MSC classification

Primary: 11R27: Units and factorization
Secondary: 11N37: Asymptotic results on arithmetic functions 11N45: Asymptotic results on counting functions for algebraic and topological structures
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 96 , Issue 1 , August 2017 , pp. 44 - 58
Copyright
© 2017 Australian Mathematical Publishing Association Inc. 

Footnotes

Research of the first author is supported by NSF award DMS-1402268.

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