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Let $X$ be a singular Hermitian complex space of pure dimension $n$. We use a resolution of singularities to give a smooth representation of the $L^2$-$\overline\partial$-cohomology of $(n,q)$-forms on $X$. The central tool is an…

Complex Variables · Mathematics 2015-11-03 Jean Ruppenthal

We obtain some $L^2$ results for the Cauchy-Riemann operator on forms that vanish to high order near the singular set of a complex space.

Complex Variables · Mathematics 2007-05-23 John Erik Fornaess , Nils Ovrelid , Sophia Vassiliadou

As an application of a new characterization of compactness of the $\bar\partial $-Neumann operator we derive a sufficient condition for compactness of the $\bar\partial $- Neumann operator on $(0,q)$-forms in weighted $L^2$-spaces on…

Complex Variables · Mathematics 2010-12-21 Friedrich Haslinger

Let X be a pure n-dimensional (n>1) complex analytic set in C^N with an isolated singularity at 0. In this paper we express the L2-(0,q)-d-bar-cohomology groups for all q with 0<q<n+1, of a sufficiently small deleted neighborhood of the…

Complex Variables · Mathematics 2011-07-12 Nils Ovrelid , Sophia Vassiliadou

In the present paper, we devise a version of topological $L^2$-Serre duality for singular complex spaces with arbitrary singularities. This duality is used to deduce various new $L^2$-vanishing theorems for the $\bar{\partial}$-equation on…

Complex Variables · Mathematics 2016-03-28 Jean Ruppenthal

Let $X$ be a Hermitian complex space of pure dimension $n$ with isolated singularities. In the present paper, we give a natural resolution for the canonical sheaf of square-integrable holomorphic $n$-forms with Dirichlet boundary condition…

Complex Variables · Mathematics 2015-01-19 Jean Ruppenthal

We obtain some L2 results for d-bar on forms that vanish to high order on the singular set of a complex space. As a consequence of our main theorem we obtain weighted L2-solvability results for compactly supported d-bar closed (p,q) forms…

Complex Variables · Mathematics 2009-03-24 Nils Ovrelid , Sophia Vassiliadou

We introduce a trick of dealing with $L^2$ estimates of $\bar{\partial}$ with singular weights on complete K\"ahler domains.

Complex Variables · Mathematics 2016-04-05 Bo-Yong Chen

In this paper, in order to develop a more general $L^2$-theory for the $\overline{\partial}$-operator on complex spaces, we provide $L^2$-Dolbeault fine resolutions and isomorphisms, and $L^2$-estimates, for holomorphic line bundles on…

Complex Variables · Mathematics 2026-02-04 Yuta Watanabe

We present a comprehensive $L^2$-theory for the $\overline\partial$-operator on singular complex curves, including $L^2$-versions of the Riemann-Roch theorem and some applications.

Complex Variables · Mathematics 2015-06-02 Jean Ruppenthal , Martin Sera

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

Given a complex manifold containing a relatively compact $Z(q)$ domain, we give sufficient geometric conditions on the domain so that its $L^2$-cohomology in degree $(p,q)$ (known to be finite dimensional) vanishes. The condition consists…

Complex Variables · Mathematics 2026-03-25 Debraj Chakrabarti , Phillip S. Harrington , Andrew Raich

We solve the $\bar{\partial}$-equation for $(p,q)$-forms locally on any reduced pure-dimensional complex space and we prove an explicit version of Serre duality by introducing suitable concrete fine sheaves of certain $(p,q)$-currents. In…

Complex Variables · Mathematics 2018-01-31 Håkan Samuelsson Kalm

Let X be a Hermitian complex space of pure dimension n. We show that the d-bar-Neumann operator on (p,q)-forms is compact at isolated singularities of X if q>0 and p+q is not equal to n-1 or n. The main step is the construction of compact…

Complex Variables · Mathematics 2010-07-27 Jean Ruppenthal

The classical $L^2$ estimate for the $\overline{\partial}$ operators is a basic tool in complex analysis of several variables. Naturally, it is expected to extend this estimate to infinite dimensional complex analysis, but this is a…

Functional Analysis · Mathematics 2020-02-18 Jiayang Yu , Xu Zhang

An $L^2$ version of the Serre duality on domains in complex manifolds involving duality of Hilbert space realizations of the $\bar{\partial}$-operator is established. This duality is used to study the solution of the…

Complex Variables · Mathematics 2010-12-06 Debraj Chakrabarti , Mei-Chi Shaw

Let X be a Hermitian complex space of pure dimension with only isolated singularities and p: M -> X a resolution of singularities. Let D be a relatively compact domain in X with no singularities in the boundary, D^*=D-Sing(X) the regular…

Complex Variables · Mathematics 2012-12-11 Nils Øvrelid , Jean Ruppenthal

In this survey, we explain a version of topological $L^2$-Serre duality for singular complex spaces with arbitrary singularities. This duality can be used to deduce various $L^2$-vanishing theorems for the $\overline\partial$-equation on…

Complex Variables · Mathematics 2014-09-05 Jean Ruppenthal

In this paper, we develop $L^2$ theory for Riemannian and Hermitian foliations on manifolds with basic boundary. We establish a decomposition theorem, various vanishing theorems, a twisted duality theorem for basic cohomologies and an…

Differential Geometry · Mathematics 2024-02-14 Qingchun Ji , Jun Yao

The $L^2$ theory of the $\bar\partial$ operator on domains in $\mathbb{C}^n$ is predicated on establishing a good basic estimate. Typically, one proves not a single basic estimate but a family of basic estimates that we call a family of…

Complex Variables · Mathematics 2019-04-23 Phillip S. Harrington , Andrew Raich
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