Multipoint Seshadri constants on P^2

B. Harbourne, J. Roé

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Resum

Working over C and formalizing and sharpening approaches introduced in [12], [9] and [8], we give a method for verifying when a divisor on a blow up of ℙ2 at general points is nef. The method is useful both theoretically and when doing computer computations. The main application is to obtaining lower bounds on multipoint Seshadri constants on ℙ2. In combination with methods developed in [4], significantly improved explicit lower bounds are obtained.
Idioma originalAnglès
Pàgines (de-a)99-102
RevistaRendiconti del seminario matematico (Torino)
Volum63
Número1
Estat de la publicacióPublicada - 1 de des. 2005

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