English
Related papers

Related papers: $L^2$-extension of $\dbar$-closed forms

200 papers

We give a direct proof of the Ohsawa-Takegoshi by solving directly the d-bar equation.

Complex Variables · Mathematics 2011-05-13 Bo-Yong Chen

We give a simplified proof of an optimal version of the Ohsawa-Takegoshi $L^2$-extension theorem. We follow the variational proof by Berndtsson-Lempert and use the method in the paper of McNeal-Varolin. As an application, we give an optimal…

Complex Variables · Mathematics 2019-10-15 Genki Hosono

Combining V. Koziarz's observation about the regularity of some modified section related to the initial extension with J. McNeal--D. Varolin's regularity argument, we generalize two theorems of McNeal--Varolin for the $L^2$ extension of…

Complex Variables · Mathematics 2021-01-27 Jian Chen , Sheng Rao

We prove extension of a di-bar-closed, smooth, form from the intersection of a pseudoconvex domain with a complex hyperplane to the whole domain. The extension form is di-bar-closed, has harmonic coefficients and its L^2-norm is estimated…

Complex Variables · Mathematics 2015-05-05 Luca Baracco , Stefano Pinton , Giuseppe Zampieri

We prove an $L^2$ extension theorem of Ohsawa-Takegoshi type for extending holomorphic sections of line bundles from a subvariety which is given as a maximal log-canonical center of a pair and is of general codimension in a projective…

Algebraic Geometry · Mathematics 2008-08-01 Dano Kim

Using $L^2$-methods for the $\bar\partial$-equation we prove that the Ohsawa-Takegoshi extension theorem also holds for holomorphic sections of a vector bundle, over compact K\"ahler manifolds. We then proceed to show that the conditions…

Complex Variables · Mathematics 2014-05-08 Hossein Raufi

The purpose of this note is to show that the di-bar-estimate which is needed in the Ohsawa-Takegoshi Extension Theorem [6] is a direct consequence of the Hormander-Kohn-Morrey weigthed inequality. In this inequality, the Donnelly-Fefferman…

Complex Variables · Mathematics 2015-05-05 Luca Baracco

In this article we establish several Ohsawa-Takegoshi type theorems for twisted pluricanonical forms and metrics of adjoint $\bR$-bundles.

Algebraic Geometry · Mathematics 2010-02-25 Bo Berndtsson , Mihai Paun

We present a short proof of a version of the Ohsawa-Takegoshi-Manivel $L^2$ extension theorem as a corollary of a Skoda-type $L^2$ division theorem with bounded generators. The new division theorem is of independent interest: the…

Complex Variables · Mathematics 2025-03-04 Roberto Albesiano

The key to the proof of the Ohsawa-Takegoshi Extension Theorem is a certain $\bar{\partial}$-estimate. The purpose of this note is to show that the 'curvature term' that arises in the Kohn-Morrey-H\"{o}rmander inequality (or the…

Complex Variables · Mathematics 2011-06-23 Emil J. Straube , Giuseppe Zampieri

Our main goal in this article is to prove a new extension theorem for sections of the canonical bundle of a weakly pseudoconvex K\"ahler manifold with values in a line bundle endowed with a possibly singular metric. We also give some…

Algebraic Geometry · Mathematics 2017-10-04 Junyan Cao

We establish a new extension result for twisted canonical forms defined on a hypersurface with simple normal crossings of a projective manifold. Some of the examples presented in the appendix are showing that the bounds we obtain for the…

Complex Variables · Mathematics 2020-02-13 Junyan Cao , Mihai Paun

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

The main purpose of this paper is to generalize the celebrated L${}^2$ extension theorem of Ohsawa-Takegoshi in several directions : the holomorphic sections to extend are taken in a possibly singular hermitian line bundle, the subvariety…

Algebraic Geometry · Mathematics 2017-05-24 Junyan Cao , Jean-Pierre Demailly , Shin-Ichi Matsumura

We prove the optimal $L^2$-extension theorem of Ohsawa-Takegoshi type on a tube domain. As an application, we give a simple proof of Pr\'ekopa's theorem.

Complex Variables · Mathematics 2021-08-04 Takahiro Inayama

We establish $L^2$ extension theorems for $\bar \partial$-closed $(0,q)$-forms with values in a holomorphic line bundle with smooth Hermitian metric, from a smooth hypersurface on a Stein manifold. Our result extends (and gives a new,…

Complex Variables · Mathematics 2015-03-02 Jeffery D. McNeal , Dror Varolin

We prove an extension theorem of "Ohsawa-Takegoshi type" for Dolbeault q$-classes of cohomology ($q\geq 1$) on smooth compact hypersurfaces in a weakly pseudoconvex K\"ahler manifold

Complex Variables · Mathematics 2010-06-28 Vincent Koziarz

In this article we prove a theorem of Ohsawa-Takegoshi type on compact K\"ahler manifolds. Our arguments follow the "standard" approach for this kind of extension results; however, there are many complications arising from the…

Algebraic Geometry · Mathematics 2011-04-18 Li Yi

We establish a new generalization of an $L^2$ extension theorem of Ohsawa-Takegoshi type. The improvement in the theorem is that it allows the usual curvature assumptions to be significantly weakened in certain favorable settings. The…

Complex Variables · Mathematics 2014-07-28 Dror Varolin

Hosono obtained sharper estimates of the Ohsawa--Takegoshi $L^2$-extention theorem by allowing the constant depending on the weight function for a domain in $\mathbb{C}$. In this article, we show the higher dimensional case of sharper…

Complex Variables · Mathematics 2021-02-04 Shota Kikuchi
‹ Prev 1 2 3 10 Next ›