Higher direct images of dualizing sheaves of Lagrangian fibrations
Copyright policy )Higher direct images of dualizing sheaves of Lagrangian fibrations
Let f : X → S be a Lagrangian fibration between projective varieties. We prove that [inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="01i" /] ≅ Ω i S if S is smooth. Suppose that X is an irreducible symplectic manifold or a certain moduli space of semistable torsion free sheaves on a K 3 surface, the Hodge numbers satisfy h p,q ( S ) = h p,q [inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="02i" /], where n = dim S . If S ≅ [inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="03i" /] and X is an irreducible symplectic manifold, there exists a hypersurface M f of the Kuranishi space of X such that every member of the Kuranishi family over M f admits a Lagrangian fibration over [inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="04i" /].
- Kyoto University Japan
Differentials and other special sheaves; D-modules; Bernstein-Sato ideals and polynomials, \(K3\) surfaces and Enriques surfaces, Fibrations, degenerations in algebraic geometry
Differentials and other special sheaves; D-modules; Bernstein-Sato ideals and polynomials, \(K3\) surfaces and Enriques surfaces, Fibrations, degenerations in algebraic geometry
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