Height zeta function: Difference between revisions
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In mathematics, the '''height zeta function''' of an [[algebraic variety]] or more generally a subset of a variety encodes the distribution of points of of given height. |
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#REDIRECT [[Nevanlinna invariant]] |
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If ''S'' is a set with [[height function]] ''H'', such that there are only finitely many elements of bounded height, define a ''counting function'' |
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:<math>N(S,H,B) = \hash { x \in S : H(x) \le B } . </math> |
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and a ''zeta function'' |
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:<math> Z(S,H;s) = \sum_{x \in S} H(x)^{-s} . </math> |
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If ''Z'' has [[abscissa of convergence]] α and there is a constant ''c'' such that ''N'' has rate of growth |
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:<math> N \sim c B^a (\log B)^{t-1} </math> |
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then a version of the [[Wiener–Ikehara theorem]] holds: ''Z'' has a ''t''-fold pole at ''s'' = α with residue ''c''.''a''.Γ(''t''). |
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The abscissa of convergence has similar formal properties to the [[Nevanlinna invariant]] and it is conjectured that they are essentially the same. |
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==References== |
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* {{cite book | first1=Marc | last1=Hindry | first2=Joseph H. | last2=Silverman | authorlink2=Joseph H. Silverman | title=Diophantine Geometry: An Introduction | series=[[Graduate Texts in Mathematics]] | volume=201 | year=2000 | isbn=0-387-98981-1 | zbl=0948.11023 }} |
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[[Category:Diophantine geometry]] |
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[[Category:Geometry of divisors]] |
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{{geometry-stub}} |
Revision as of 18:25, 13 May 2012
In mathematics, the height zeta function of an algebraic variety or more generally a subset of a variety encodes the distribution of points of of given height.
If S is a set with height function H, such that there are only finitely many elements of bounded height, define a counting function
- Failed to parse (unknown function "\hash"): {\displaystyle N(S,H,B) = \hash { x \in S : H(x) \le B } . }
and a zeta function
If Z has abscissa of convergence α and there is a constant c such that N has rate of growth
then a version of the Wiener–Ikehara theorem holds: Z has a t-fold pole at s = α with residue c.a.Γ(t).
The abscissa of convergence has similar formal properties to the Nevanlinna invariant and it is conjectured that they are essentially the same.
References
- Hindry, Marc; Silverman, Joseph H. (2000). Diophantine Geometry: An Introduction. Graduate Texts in Mathematics. Vol. 201. ISBN 0-387-98981-1. Zbl 0948.11023.