Characterizing normal crossing hypersurfaces
type: Item
instance of: scholarly article
title: Characterizing normal crossing hypersurfaces
zbMATH Open document ID: 1333.32034
author: Eleonore Faber
published in: Mathematische Annalen
publication date: 2015-03-31T00:00:00Z
full work available at URL: https://arxiv.org/abs/1201.6276
full work available at URL: 1201.6276v2.pdf
review text: The purpose of this paper is to give an algebraic characterization of normal crossing divisors on complex manifolds. It is known that a normal crossing divisor is a free divisor. The author proves that a divisor on a complex manifold has normal crossings at a point if and only if it is free with radical Jacobian ideal at that point and its normalization is smooth. Since there is a characterization of free divisors using their Jacobian ideals [\textit{A. G. Aleksandrov}, Math. USSR, Sb. 65, No. 2, 561--574 (1990; Zbl 0684.32010); translation from Mat. Sb., Nov. Ser. 137(179), No. 4(12), 554--567 (1988)], one obtains a purely algebraic characterization of normal crossing divisors. From \textit{K. Saito}'s theory [J. Fac. Sci., Univ. Tokyo, Sect. I A 27, 265--291 (1980; Zbl 0496.32007)], the characterization can be given in terms of logarithmic differential forms and vector fields, and also from [\textit{M. Granger} and \textit{M. Schulze}, Compos. Math. 150, No. 9, 1607--1622 (2014; Zbl 1314.32043)] it can be given in terms of the logarithmic residue.
reviewed by: Tomohiro Okuma
Mathematics Subject Classification ID: 32S25
Mathematics Subject Classification ID: 32S10
Mathematics Subject Classification ID: 32A27
Mathematics Subject Classification ID: 14B05
zbMATH DE Number: 6421509
zbMATH Keywords: normal crossing divisors
zbMATH Keywords: free divisors
zbMATH Keywords: Jacobian ideal
zbMATH Keywords: logarithmic forms
zbMATH Keywords: logarithmic residue
MaRDI profile type: Publication
OpenAlex ID: W1972701384
Wikidata QID: Q59897481
arXiv ID: 1201.6276
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DOI: 10.1007/S00208-014-1099-2
description: scientific article