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In this paper we study holomorphic vector bundles with singular Hermitian metrics whose curvature are Hermitian matrix currents. We obtain an extension theorem for holomorphic jet sections of nef holomorphic vector bundle on compact…

Algebraic Geometry · Mathematics 2014-12-30 Qilin Yang

We prove a criterion for the existence of harmonic metrics on Higgs bundles that are defined on smooth loci of klt varieties. As one application, we resolve the quasi-etale uniformisation problem for minimal varieties of general type to…

Algebraic Geometry · Mathematics 2021-03-17 Daniel Greb , Stefan Kebekus , Thomas Peternell , Behrouz Taji

Let $H$ be a Hopf algebra. We consider $H$-equivariant modules over a Hopf module category $\mathcal C$ as modules over the smash extension $\mathcal C\# H$. We construct Grothendieck spectral sequences for the cohomologies as well as the…

Rings and Algebras · Mathematics 2020-09-16 Mamta Balodi , Abhishek Banerjee , Samarpita Ray

Let f : X --> Y be a holomorphic map of complex manifolds, which is proper, Kahler, and surjective with connected fibers, and which is smooth over Y-Z the complement of an analytic subset Z. Let E be a Nakano semi-positive vector bundle on…

Algebraic Geometry · Mathematics 2018-05-24 Christophe Mourougane , Shigeharu Takayama

If a mapping of several complex variables into projective space is holomorphic in each pair of variables, then it is globally holomorphic.

Complex Variables · Mathematics 2007-05-23 P. M. Gauthier , E. S. Zeron

In this article, we continue our study of 'Frobenius structures' and symplectic spectral invariants in the context of symplectic spinors. By studying the case of $C^1$-small Hamiltonian mappings on symplectic manifolds $M$ admitting a…

Differential Geometry · Mathematics 2023-10-31 Andreas Klein

We review the notions of symplectic and orthogonal vector bundles over curves, and the connection between principal parts and extensions of vector bundles. We give a criterion for a certain extension of rank 2n to be symplectic or…

Algebraic Geometry · Mathematics 2007-05-23 George H. Hitching

In this paper, we first get a criterion formula for whether a differential form is holomorphic with respect to the generalized complex structure induced by $\epsilon$. Next, we get the local extensions of $\overline\partial$-closed forms on…

Differential Geometry · Mathematics 2018-03-13 Kang Wei

We axiomatize the algebraic properties of toroidal compactifications of (mixed) Shimura varieties and their automorphic vector bundles. A notion of generalized automorphic sheaf is proposed which includes sheaves of (meromorphic) sections…

Algebraic Geometry · Mathematics 2019-06-06 Fritz Hörmann

The celebrated Ohsawa--Takegoshi extension theorem for $L^2$ holomorphic functions on bounded pseudoconvex domains in $\mathbb C^n$ is a fundamental result in several complex variables and complex geometry. Ohsawa conjectured in 1995 that…

Complex Variables · Mathematics 2024-07-17 Xieping Wang

We study Hodge bundles on Siegel varieties and their various extensions to smooth toroidal compactifications. Precisely, we construct a canonical Hodge bundle on an arbitrary Siegel variety so that the holomorphic tangent bundle can be…

Algebraic Geometry · Mathematics 2014-05-20 Shing-Tung Yau , Yi Zhang

In this paper, we obtain optimal $L^2$ extension of holomorphic sections of a holomorphic vector bundle from subvarieties in weakly pseudoconvex K\"{a}hler manifolds. Moreover, in the case of line bundle the Hermitian metric is allowed to…

Complex Variables · Mathematics 2021-01-20 Xiangyu Zhou , Langfeng Zhu

We describe extension classes arising in the $\ell$-adic and Hodge cohomology of Hilbert modular varieties, generalising results of Caspar to arbitrary dimensions. We show that this description is consistent with the "plectic conjectures"…

Number Theory · Mathematics 2020-03-18 Cosmin Davidescu , Anthony J. Scholl

The statistical properties of mostly expanding partially hyperbolic diffeomorphisms have been substantially studied. In this paper, we would like to address the entropy properties of mostly expanding partially hyperbolic diffeomorphisms. We…

Dynamical Systems · Mathematics 2024-01-24 Jinhua Zhang

In \cite{BCO25}, Bruzzo, Capasso and Otero extended the notion of ampleness of vector bundles to the more general context of Higgs bundles. But the ampleness of Higgs bundles did not coincide with the ampleness of vector bundles when the…

Algebraic Geometry · Mathematics 2026-05-22 Indranil Biswas , Snehajit Misra , Nabanita Ray

We provide an extension of the Gromov--Zimmer Embedding Theorem for Cartan geometries of [3] to tractor bundles carrying any invariant connection, including tractor connections and prolongation connections of first BGG operators for…

Differential Geometry · Mathematics 2025-10-14 Karin Melnick , Katharina Neusser

We recall the complex structure on the generalised loop spaces $W^{k,2}(S,X)$, where $S$ is a compact real manifold with boundary and $X$ is a complex manifold, and prove a Hartogs-type extension theorem for holomorphic maps from certain…

Complex Variables · Mathematics 2025-01-28 Mohammed Anakkar

In the first part of this paper, we consider, in the context of an arbitrary hyperplane arrangement, the map between compactly supported cohomology to the usual cohomology of a local system. A formula (i.e., an explicit algebraic de Rham…

Algebraic Geometry · Mathematics 2017-03-07 Prakash Belkale , Patrick Brosnan , Swarnava Mukhopadhyay

In this paper it is shown that the Hartogs triangle $\mathbf T$ in $\mathbf C^2$ is a uniform domain. This implies that the Hartogs triangle is a Sobolev extension domain. Furthermore, the weak and strong maximal extensions of the…

Complex Variables · Mathematics 2022-01-31 Almut Burchard , Joshua Flynn , Guozhen Lu , Mei-Chi Shaw

It is a long-standing problem in Hodge theory to generalize the Satake--Baily--Borel (SBB) compactification of a locally Hermitian symmetric space to arbitrary period maps. A proper topological SBB-type completion has been constructed, and…

Algebraic Geometry · Mathematics 2026-04-24 Colleen Robles