Local cohomology of logarithmic forms

Denham, G.; Schenck, H.; Schulze, M.; Wakefield, M.; Walther, U.

Denham, G.; Schenck, H.; Schulze, M.; Wakefield, M.; Walther, U.

Annales de l'Institut Fourier, Volume 63 (2013) no. 3, p. 1177-1203

Abstract
Résumé

Let $Y$ be a divisor on a smooth algebraic variety $X$ . We investigate the geometry of the Jacobian scheme of $Y$ , homological invariants derived from logarithmic differential forms along $Y$ , and their relationship with the property that $Y$ be a free divisor. We consider arrangements of hyperplanes as a source of examples and counterexamples. In particular, we make a complete calculation of the local cohomology of logarithmic forms of generic hyperplane arrangements.

Soit $X$ une variété algébrique lisse et $Y$ un diviseur sur $X$ . Nous étudions la géométrie du schéma Jacobien de $Y$ , les invariants homologiques provenant des formes différentielles logarithmiques le long de $Y$ , et leur relation avec la propriété que $Y$ soit un diviseur libre. Nous considérons les arrangements d’hyperplans comme source d’exemples et de contre-exemples. En particulier, nous faisons un calcul complet de la cohomologie locale des formes logarithmiques d’arrangements d’hyperplans génériques.

MR 3137483 | Zbl 1277.32030

DOI : https://doi.org/10.5802/aif.2787
Classification: 32S22, 52C35, 16W25
Keywords: hyperplane arrangement, logarithmic, differential form, free divisor

@article{AIF_2013__63_3_1177_0,
     author = {Denham, G. and Schenck, H. and Schulze, M. and Wakefield, M. and Walther, U.},
     title = {Local cohomology of logarithmic forms},
     journal = {Annales de l'Institut Fourier},
     publisher = {Association des Annales de l'institut Fourier},
     volume = {63},
     number = {3},
     year = {2013},
     pages = {1177-1203},
     doi = {10.5802/aif.2787},
     mrnumber = {3137483},
     zbl = {1277.32030},
     language = {en},
     url = {http://www.numdam.org/item/AIF_2013__63_3_1177_0}
}

Denham, G.; Schenck, H.; Schulze, M.; Wakefield, M.; Walther, U. Local cohomology of logarithmic forms. Annales de l'Institut Fourier, Volume 63 (2013) no. 3, pp. 1177-1203. doi : 10.5802/aif.2787. http://www.numdam.org/item/AIF_2013__63_3_1177_0/

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