Bridgeland stability conditions on threefolds II: An application to Fujita’s conjecture

Author:

Bayer Arend,Bertram Aaron,Macrì Emanuele,Toda Yukinobu

Abstract

We apply a conjectured inequality on third Chern classes of stable two-term complexes on threefolds to Fujita’s conjecture. More precisely, the inequality is shown to imply a Reider-type theorem in dimension three which in turn implies that K X + 6 L K_X + 6L is very ample when L L is ample, and that 5 L 5L is very ample when K X K_X is trivial.

Publisher

American Mathematical Society (AMS)

Subject

Geometry and Topology,Algebra and Number Theory

Reference12 articles.

1. Reider’s theorem and Thaddeus pairs revisited;Arcara, Daniele,2011

2. [BMT11] Arend Bayer, Emanuele Macrì, and Yukinobu Toda. Bridgeland stability conditions on threefolds I: Bogomolov-Gieseker type inequalities, 2011. arXiv:1103.5010.

3. Stability conditions on triangulated categories;Bridgeland, Tom;Ann. of Math. (2),2007

4. Global generation of pluricanonical and adjoint linear series on smooth projective threefolds;Ein, Lawrence;J. Amer. Math. Soc.,1993

5. [Fuj93] Takao Fujita. Remarks on Ein-Lazarsfeld criterion of spannedness of adjoint bundles of polarized threefolds, 1993. arXiv:alg-geom/9311013.

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