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Lyubeznik numbers of local rings and linear strands of graded ideals

Autor
Alvarez, J.; Yanagawa, K.
Tipus d'activitat
Document cientificotècnic
Data
2014-08
Codi
[prepr201406AlvY]
Projecte finançador
Estructura de las resoluciones libres: aspectos efectivos, geométricos y homológicos (MTM2010-20279-C02-01)
Repositori
http://hdl.handle.net/2117/24185 Obrir en finestra nova
URL
http://www.ma1.upc.edu/recerca/preprints/preprints-2014#6 Obrir en finestra nova
Resum
n this work we intro duce a new set of invariants asso ciated to the linear strands of a minimal free resolution of a Z -graded ideal I R = | [ x 1 ;:::;x n ] . We also prove that these invariants satisfy some prop erties analogous to those of Lyub eznik numb ers of lo cal rings. In particular, they satisfy a consecutiveness prop erty that we prove rst for Lyub eznik numb ers. For the case of squarefree monomial ideals we get more insight on the relation b etween Lyub eznik numb ers and the l...
Citació
Alvarez, J.; Yanagawa, K. "Lyubeznik numbers of local rings and linear strands of graded ideals". 2014.
Grup de recerca
GEOMVAP - Geometria de Varietats i Aplicacions

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