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We use the well-posedness of transmission problems on classes of two-sided Sobolev extension domains to give variational definitions for (boundary) layer potential operators and Neumann-Poincar{\'e} operators. These classes of domains…

Analysis of PDEs · Mathematics 2026-02-10 Gabriel Claret , Michael Hinz , Anna Rozanova-Pierrat , Alexander Teplyaev

In this paper we deal with the following question: is it true that any bounded smooth pseudoconvex domain in $\mathbb{C}^n$ whose boundary contains a $q$-dimensional complex manifold $M$ necessarily has a noncompact…

Complex Variables · Mathematics 2017-08-22 Gian Maria Dall'Ara

We give a new characterization of pseudoconvex point, and of finite type point, using analytic discs.

Complex Variables · Mathematics 2007-05-23 Steven G. Krantz

In the paper we give a lower estimate for the essential norm of the $\bar{\partial}$-Neumann operator on convex domains and worm domains of Diederich and Fornaess.

Complex Variables · Mathematics 2021-03-08 Zeljko Cuckovic , Sonmez Sahutoglu

We obtain a number of explicit estimates for quasi-norms of pseudo-differential operators in the Schatten-von Neumann classes $S_q$ with $0<q\le 1$. The estimates are applied to derive semi-classical bounds for operators with smooth or…

Spectral Theory · Mathematics 2022-01-27 Alexander V. Sobolev

We construct new $3$-dimensional variants of the classical Diederich-Fornaess worm domain. We show that they are smoothly bounded, pseudoconvex, and have nontrivial Nebenh\"{u}lle. We also show that their Bergman projections do not preserve…

Complex Variables · Mathematics 2025-06-10 Steven G. Krantz , Marco M. Peloso , Caterina Stoppato

We introduce a new integral representation formula in the d-bar Neumann Theory on weakly pseudoconvex domains which satisfies certain estimates analogous to the basic L^2 estimate. It is expected that more complete estimates can be obtained…

Complex Variables · Mathematics 2016-01-20 R. Michael Range

We characterize bounded Toeplitz and Hankel operators from weighted Bergman spaces to weighted Besov spaces in tube domains over symmetric cones. We deduce weak factorization results for some Bergman spaces of this setting.

Classical Analysis and ODEs · Mathematics 2015-08-25 Cyrille Nana , Benoit F. Sehba

On the setting of the Siegel upper half-space we study the spaces of bounded and vanishing mean oscillations which are defined in terms of the Berezin transform, and we use them to characterize bounded and compact Hankel operators on…

Complex Variables · Mathematics 2021-09-06 Jiajia Si

We provide geometric conditions on the set of boundary points of infinite type of a smooth bounded pseudoconvex domain in $\mathbb{C}^{n}$ which imply that the $\bar{\partial}$-Neumann operator is compact. These conditions are formulated in…

Complex Variables · Mathematics 2007-05-23 Samangi Munasinghe , Emil J. Straube

We study spectral properties of divergence form elliptic operators $-\textrm{div} [A(z) \nabla f(z)]$ with the Neumann boundary condition in planar domains (including some fractal type domains), that satisfy to the quasihyperbolic boundary…

Analysis of PDEs · Mathematics 2020-04-24 Vladimir Gol'dshtein , Valeryi Pchelintsev , Alexander Ukhlov

We introduce two new classes of pseudo-differential operators on open curves. They correspond via a change of variables to subclasses of the periodic pseudo-differential operators, which respectively stabilize even and odd functions. The…

Numerical Analysis · Mathematics 2019-12-03 Martin Averseng

We give a precise description of Bergman complete bounded pseudoconvex Reinhardt domains.

Complex Variables · Mathematics 2007-05-23 Wlodzimierz Zwonek

Using several complex variables techniques, we investigate the interplay between the geometry of the boundary and compactness of Hankel operators. Let f be a function smooth up to the boundary on a smooth bounded pseudoconvex domain D in…

Complex Variables · Mathematics 2021-03-08 Zeljko Cuckovic , Sonmez Sahutoglu

We give a sufficient condition for subelliptic estimates for the d-bar-Neumann operator on smoothly bounded, pseudoconvex domains in $\mathbb{C}^n$. This condition is a quantified version of McNeal's condition ($\tilde{P}$) for compactness…

Complex Variables · Mathematics 2011-10-10 Anne-Katrin Herbig

We prove conditions for the existence of a continuous linear right inverse for a surjective convolution operator in spaces of germs of analytic functions on convex subsets of the complex plane. Considered convex sets have a countable…

Functional Analysis · Mathematics 2018-10-22 S. N. Melikhov , L. V. Khanina

We obtain some necessary and sufficient conditions for the boundedness of a family of positive operators defined on symmetric cones, we then deduce off-diagonal boundedness of associated Bergman-type operators in tube domains over symmetric…

Classical Analysis and ODEs · Mathematics 2017-09-13 Cyrille Nana , Benoît F. Sehba

A sufficient condition for the infinite dimensionality of the Bergman space of a pseudoconvex domain is given. This condition holds on any pseudoconvex domain that has at least one smooth boundary point of finite type in the sense of…

Complex Variables · Mathematics 2016-03-31 A. -K. Gallagher , T. Harz , G. Herbort

We study proper holomorphic mappings between strictly pseudoconvex domains with low boundary regularity.

Complex Variables · Mathematics 2021-08-11 Alexandre Sukhov

Let $\Omega\subset \mathbb{C}^n$ be a smooth bounded pseudoconvex domain and $A^2 (\Omega)$ denote its Bergman space. Let $P:L^2(\Omega)\longrightarrow A^2(\Omega)$ be the Bergman projection. For a measurable $\varphi:\Omega\longrightarrow…

Complex Variables · Mathematics 2021-05-25 Zeljko Cuckovic