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We study higher complex Sobolev spaces and their corresponding functional capacities. In particular, we prove the Moser-Trudinger inequality for these spaces and discuss some relationships between these spaces and the complex…

Complex Variables · Mathematics 2025-04-14 Thai Duong Do , Duc-Bao Nguyen

A new continuity for set-valued functions is introduced, and an existence theorem is proved for such continuous set-valued functions.

Numerical Analysis · Mathematics 2009-01-13 Alexandre Goldsztejn

We continue to discuss the example presented in \cite{JarPfl2015}. In particular, we clarify some gaps and complete the description of the Shilov boundary.

Complex Variables · Mathematics 2015-10-19 Marek Jarnicki , Peter Pflug

We prove uniform boundedness of certain boundary representations on appropriate fractional Sobolev spaces $W^{s,p}$ with $p>1$ for arbitrary Gromov hyperbolic groups. These are closed subspaces of $L^p$ and in particular Hilbert spaces in…

Group Theory · Mathematics 2023-06-19 Kevin Boucher , Jan Spakula

In Thurston's notes, he gives two different definitions of the Gromov norm (also called simplicial volume) of a manifold and states that they are equal but does not prove it. Gromov proves it in the special case of hyperbolic manifolds as a…

Geometric Topology · Mathematics 2010-03-16 Lewis Bowen

The simplicial volume is a homotopy invariant of manifolds introduced by Gromov in 1982. In order to study its main properties, Gromov himself initiated the dual theory of bounded cohomology, that developed into an active and independent…

Geometric Topology · Mathematics 2019-12-20 Roberto Frigerio , Marco Moraschini

In this paper we generalize a result in [1], showing that an arbitrary Riemannian symmetric space can be realized as a closed submanifold of a covering group of the Lie group defining the symmetric space. Some properties of the subgroups of…

Geometric Topology · Mathematics 2007-05-23 Jinpeng An , Zhengdong Wang

A new notion of a Hausdorff-type operator on function spaces over domains in Euclidean spaces is introduced, and a sufficient condition for the boundedness of this operator on Sobolev spaces is proved. It is shown that this condition cannot…

Functional Analysis · Mathematics 2024-06-18 A. R. Mirotin

We consider the equivalence of some norms in Sobolev spaces on bounded domains of the d-dimensional real Euclidean space and also in Sobolev spaces on the boundaries of those domains.

We prove a space-level enhancement of the Pontryagin--Thom theorem, identifying the space of maps from a manifold to a Thom space with a moduli space of submanifolds.

Algebraic Topology · Mathematics 2026-01-08 David Ayala , John Francis

We establish enhanced bounds on Cheeger-Gromov rho-invariants for general 3-manifolds and yet stronger bounds for special classes of 3-manifold. As key ingredients, we construct chain null-homotopies whose complexity is linearly bounded by…

Geometric Topology · Mathematics 2021-03-29 Geunho Lim

This work concludes a series of four papers on the foundational theory of orbifolds and stacks. We apply the abstract theory, developed in its predecessors, to orbifolds derived from manifolds. Specifically, we show how the very concrete…

Category Theory · Mathematics 2008-02-03 Paul Feit

In this paper we provide an extension to the Jellett-Minkowski's formula for immersed submanifolds into ambient manifolds which possesses a pole and radial curvatures bounded from above or below by the radial sectional curvatures of a…

Differential Geometry · Mathematics 2013-10-23 Vicent Gimeno

We define a notion of a symplectic structure on stratified spaces, and demonstrate that given a symplectic structure on a stratified space $X$ with integral cohomology class, $X$ can be symplectically embedded in some complex projective…

Symplectic Geometry · Mathematics 2023-08-15 Mahan Mj , Balarka Sen

Reparametrization invariant Sobolev metrics on spaces of regular curves have been shown to be of importance in the field of mathematical shape analysis. For practical applications, one usually discretizes the space of smooth curves and…

Differential Geometry · Mathematics 2025-03-26 Jonathan Cerqueira , Emmanuel Hartman , Eric Klassen , Martin Bauer

We present some results dealing with the local geometry of almost complex manifolds. We establish mainly the complete hyperbolicity of strictly pseudoconvex domains, the extension of plurisubharmonic functions through generic submanifolds…

Complex Variables · Mathematics 2007-05-23 Bernard Coupet , Herve Gaussier , Alexandre Sukhov

We consider Banach spaces equipped with a set of strongly continuous bounded semigroups satisfying certain conditions. Using these semigroups we introduce an analog of a modulus of continuity and define analogs of Besov norms. A…

Functional Analysis · Mathematics 2023-02-28 Isaac Z. Pesenson

In this paper we prove the pluricomplex counterpart of the Moser-Trudinger and Sobolev inequalities in complex space. We consider these inequalities for plurisubharmonic functions with finite pluricomplex energy, and we estimate the…

Complex Variables · Mathematics 2019-07-09 Per Ahag , Rafal Czyz

We show that any bounded domain in a doubling quasiconvex metric space can be approximated from inside and outside by uniform domains.

Metric Geometry · Mathematics 2021-01-28 Tapio Rajala

In this paper,based on the available mathematical works on geometry and topology of hyperbolic manifolds and discrete groups, some results of Freedman et al (hep-th/9804058) are reproduced and broadly generalized. Among many new results the…

High Energy Physics - Theory · Physics 2014-11-18 Arkady L. Kholodenko