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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao manuscripta mathemat...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Article . 1995 . Peer-reviewed
License: Springer TDM
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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1995
Data sources: zbMATH Open
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Determination of the poles of the topological zeta function for curves

Authors: Veys, Willem;

Determination of the poles of the topological zeta function for curves

Abstract

Let \(f\in \mathbb{C} [x_1, x_2, \dots, x_n]\) and fix an embedded resolution \(h: X\to \mathbb{C}^n\) of \(f^{-1} (0)\) such that \(h^{-1} (f^{-1} (0))\) is a normal crossing divisor. We denote by \(E_i\), \(i\in T\), the reduced irreducible components of \(h^{-1} (f^{-1} (0))\), and by \(N_i\) and \(\nu_i -1\) the multiplicities of \(E_i\) in the divisor of \(f\circ h\) and \(h* (dx_1 \wedge dx_2 \wedge \cdots \wedge dx_n)\) on \(X\), respectively. For \(I\subset T\) denote also \(E_I= \bigcap_{i\in I} E_i\) and \(\overset \circ E_I= E_I\setminus (\bigcup_{j\not\in I} E_j)\). The rational function \[ Z_{\text{top}, 0} (s)= \sum_{I\subset T} \chi(E_I \cap h^{-1} (0)) \prod_{i\in I} {1\over {\nu_i+ sN_i}} \] is called the topological zeta function of the germ of \(f\) at 0, where \(\chi(\;)\) denotes the Euler-Poincaré characteristic. It does not depend on the chosen resolution. In this article, the author determines all poles of \(Z_{\text{top}, 0} (s)\) for \(n=2\) and for any \(f\in \mathbb{C} [x_1, x_2]\). Assume that \((X, h)\) is the canonical embedded resolution of \(f\), i.e., the minimum one in the set of all birational morphisms \(h: X\to \mathbb{C}^2\) such that \(h^{-1} (f^{-1} (0))\) is a normal crossing divisor with smooth components. The main results are the following two theorems: Theorem 1. \(Z_{\text{top}, 0} (s)\) has at most one pole of order 2. Moreover \(s_0\) is a pole of order 2 if and only if there exist two intersection components \(E_i\) and \(E_j\) with \(s_0= -{\nu_i \over N_i}=- {\nu_j \over N_j}\), and in that case \(s_0\) is the pole closest to the origin. Theorem 2. A complex number \(s_0\) is a pole of \(Z_{\text{top}, 0} (s)\) if and only if \(s_0=- {\nu_i \over N_i}\) for some exceptional curve \(E_i\) intersecting at least three times other components or \(s_0=- {1\over N_i}\) for some irreducible component \(E_i\) of the strict transform of \(f^{-1} (0)\). The verification relies on consideration of the resolution graph and the numbers \({\nu_i \over N_i}\).

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Germany
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Keywords

Global theory and resolution of singularities (algebro-geometric aspects), Singularities of curves, local rings, resolution graph, Singularities in algebraic geometry, Article, Modifications; resolution of singularities (complex-analytic aspects), Zeta functions and related questions in algebraic geometry (e.g., Birch-Swinnerton-Dyer conjecture), 510.mathematics, curve singularity, embedded resolution, topological zeta function

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
21
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