Poincaré series for curve singularities and its behaviour under projections
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Títol
Poincaré series for curve singularities and its behaviour under projectionsAutoria
Data de publicació
2015Editor
ElsevierISSN
0022-4049Cita bibliogràfica
MOYANO-FERNÁNDEZ, Julio José. Poincaré series for curve singularities and its behaviour under projections. Journal of Pure and Applied Algebra, 2015, vol. 219, no 6, p. 2449-2462.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S0022404914002473Versió
info:eu-repo/semantics/sumittedVersionParaules clau / Matèries
Resum
Let O be an equicharacteristic reduced complete noetherian local ring of Krull dimension one, and let S be the value semigroup associated with O. The aim of the paper is to investigate the behaviour of the multi-v ... [+]
Let O be an equicharacteristic reduced complete noetherian local ring of Krull dimension one, and let S be the value semigroup associated with O. The aim of the paper is to investigate the behaviour of the multi-variable Poincaré series associated to S with respect to the property of “forgetting variables”. We prove that, for O Gorenstein, the Poincaré series with one less variable can be explicitly computed in terms of the original series; this provides also a shorter and pure arithmetical way to show that the Poincaré series is a complete invariant of the equisingularity. Moreover we express (without the Gorenstein assumption) the Hilbert series of S in terms of the Poincaré series of the unions of irreducible components of the singularity. [-]
Publicat a
Journal of Pure and Applied Algebra, 2015, vol. 219, no 6Drets d'accés
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