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Examples of non-effective rays at the boundary of the Mori cone of blow-ups of the plane
Ciliberto, Ciro
Miranda, Rick
2022
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e-ISSN
2464-8728
Abstract
In this paper we prove that no multiple of the linear system of plane curves of degree d ⩾ 4 with a point of multiplicity d−m (with 2 ⩽ m ⩽ d) and m(2d − m) simple general points is effective.
Series
Rendiconti dell’Istituto di Matematica dell’Università di Trieste: an International Journal of Mathematics
Publisher
EUT Edizioni Università di Trieste
Source
Ciro Ciliberto, Rick Miranda, "Examples of non-effective rays at the boundary of the Mori cone of blow-ups of the plane" in: "Rendiconti dell’Istituto di Matematica dell’Università di Trieste: an International Journal of Mathematics vol.54 (2022)", EUT Edizioni Università di Trieste, Trieste, 2022, pp. 211-219
Languages
en
Rights
Attribution-NonCommercial-NoDerivatives 4.0 Internazionale
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