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In this note we show that if a compact Kahler manifold with trivial canonical bundle is the total space of a holomorphic fibration without singular fibers, then the fibration is a holomorphic fiber bundle. In the algebraic case, the…

Algebraic Geometry · Mathematics 2014-11-07 Valentino Tosatti , Yuguang Zhang

We study complex solvmanifolds $\Gamma\backslash G$ with holomorphically trivial canonical bundle. We show that the trivializing section of this bundle can be either invariant or non-invariant by the action of $G$. First we characterize the…

Differential Geometry · Mathematics 2024-07-11 Adrián Andrada , Alejandro Tolcachier

Let (M,I,J,K) be a compact hypercomplex manifold admitting an HKT-metric. Assume that the canonical bundle of (M,I) is trivial as a holomorphic line bundle. We show that the holonomy of Obata connection on M is contained in SL(n,H). In…

Differential Geometry · Mathematics 2008-05-21 Misha Verbitsky

The classical Beauville-Bogomolov Decomposition Theorem asserts that any compact K\"ahler manifold with numerically trivial canonical bundle admits an \'etale cover that decomposes into a product of a torus, and irreducible,…

Algebraic Geometry · Mathematics 2016-11-08 Daniel Greb , Stefan Kebekus , Thomas Peternell

We study Galois rational maps between smooth projective varieties with trivial canonical bundle, with a particular interest in the case where the codomain is Hyper-K\"ahler. We obtain results about the birational geometry and the Galois…

Algebraic Geometry · Mathematics 2025-12-08 Matteo Verni

We compute the Dolbeault and the Bott-Chern cohomology of six dimensional solvmanifolds endowed with a complex structure of splitting type, introduced by Kasuya, and with trivial canonical bundle. We build, following results by Angella and…

Differential Geometry · Mathematics 2025-12-11 Lapo Rubini

Motivated by the Strominger-Yau-Zaslow conjecture, we study fibre spaces whose total space has trivial canonical bundle. Especially, we are interest in Calabi-Yau varieties with fibre structure. In this paper, we only consider semi-stable…

Algebraic Geometry · Mathematics 2012-01-19 Yi Zhang , Kang Zuo

To a complex symplectic manifold X we associate a canonical quantization algebroid. Our construction is similar to that of Polesello-Schapira's deformation-quantization algebroid, but the deformation parameter is no longer central. If X is…

Algebraic Geometry · Mathematics 2010-08-27 Andrea D'Agnolo , Masaki Kashiwara

We define the notion of mirror of a Calabi-Yau manifold with a stable bundle in the context of type II strings in terms of supersymmetric cycles on the mirror. This allows us to relate the variation of Hodge structure for cohomologies…

High Energy Physics - Theory · Physics 2007-05-23 Cumrun Vafa

We study holomorphic geometric structures on non-K\"ahler compact complex manifolds with trivial canonical line bundle. For Vaisman Calabi-Yau manifolds we prove that all holomorphic geometric structures of affine type on them are locally…

Differential Geometry · Mathematics 2026-05-22 Indranil Biswas , Sorin Dumitrescu

We establish the generalized canonical bundle formula for generalized lc-trivial fibrations with irrational coefficients over non-compact bases in the complex analytic setting, and we show that the discriminant b-divisor and moduli…

Algebraic Geometry · Mathematics 2026-05-05 Kenta Hashizume

This paper describes the structure of singular codimension one foliations with numerically trivial canonical bundle on projective manifolds.

Algebraic Geometry · Mathematics 2017-12-29 Frank Loray , Jorge Vitorio Pereira , Frederic Touzet

We classify singular fibres of a projective Lagrangian fibration over codimension one points. As an application, we obtain a canonical bundle formula for a projective Lagrangian fibration over a smooth manifold.

Algebraic Geometry · Mathematics 2016-11-28 Daisuke Matsushita

We study fourfolds with trivial canonical bundle which are zero loci of sections of homogeneous, completely reducible bundles over ordinary and classical complex Grassmannians. We prove that the only HyperK{\"a}hler fourfolds among them are…

Algebraic Geometry · Mathematics 2017-05-30 Vladimiro Benedetti

Any Batalin-Vilkovisky algebra with a homotopy trivialization of the BV-operator gives rise to a hypercommutative algebra structure at the cochain level which, in general, contains more homotopical information than the hypercommutative…

Algebraic Topology · Mathematics 2026-05-26 Joana Cirici , Geoffroy Horel

Fujino gave a proof in [Fuj03] for the semi-ampleness of the moduli part in the canonical bundle formula in the case when the general fibers are K3 surfaces or Abelian varieties. We show a similar statement when the general fibers are…

Algebraic Geometry · Mathematics 2024-05-10 Hyunsuk Kim

In this paper, we prove the Kobayashi hyperbolicity of the coarse moduli spaces of canonically polarized or polarized Calabi-Yau manifolds in the sense of complex $V$-spaces (a generalization of complex $V$-manifolds in the sense of…

Algebraic Geometry · Mathematics 2019-08-23 Ya Deng

A nilmanifold is a quotient of a nilpotent group $G$ by a co-compact discrete subgroup. A complex nilmanifold is one which is equipped with a $G$-invariant complex structure. We prove that a complex nilmanifold has trivial canonical bundle.…

Differential Geometry · Mathematics 2009-07-14 Maria Laura Barberis , Isabel G. Dotti , Misha Verbitsky

It is known that there exist complex solvmanifolds $(\Gamma\backslash G,J)$ whose canonical bundle is trivialized by a holomorphic section which is not invariant under the action of $G$. The main goal of this article is to classify the…

Differential Geometry · Mathematics 2025-06-26 Alejandro Tolcachier

In the present paper we provide a description of complete Calabi-Yau metrics on the canonical bundle of generalized complex flag manifolds. By means of Lie theory we give an explicit description of complete Ricci-flat K\"ahler metrics…

Differential Geometry · Mathematics 2017-12-19 Eder M. Correa , Lino Grama
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