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We obtain fundamental imbeddings for the fractional Sobolev space with variable exponent that is a generalization of well-known fractional Sobolev spaces. As an application, we obtain a-priori bounds and multiplicity of solutions to some…

Analysis of PDEs · Mathematics 2018-10-12 Ky Ho , Yun-Ho Kim

We obtain the rectifiability of the graph of a bounded variation homeomorphism $f$ in the plane and relations between gradients of $f$ and its inverse. Further, we show an example of a bounded variation homeomorphism $f$ in the plane which…

Classical Analysis and ODEs · Mathematics 2021-01-29 Luigi D'Onofrio , Jan Malý , Carlo Sbordone , Roberta Schiattarella

We construct whole-space extensions of functions in a fractional Sobolev space of order $s\in (0,1)$ and integrability $p\in (0,\infty)$ on an open set $O$ which vanish in a suitable sense on a portion $D$ of the boundary $\partial O$ of…

Functional Analysis · Mathematics 2021-08-17 Sebastian Bechtel

We study the minimization of convex, variational integrals of linear growth among all functions in the Sobolev space $W^{1,1}$ with prescribed boundary values (or its equivalent formulation as a boundary value problem for a degenerately…

Analysis of PDEs · Mathematics 2019-10-08 Lisa Beck , Miroslav Bulíček , Erika Maringová

In this paper, we investigate the existence of positive weak solutions to a nonlocal singular elliptic problem under Dirichlet boundary condition. Problem is settled in fractional Musielak-Sobolev spaces with variable order. The main tool…

Analysis of PDEs · Mathematics 2025-12-09 Azeddine Baalal , Mohamed Berghout , El-Houcine Ouali

Motivated by the study of trace for Schramm-Loewner evolutions, we consider evolutions of planar domains governed by ordinary differential equations with holomorphic vector fields $F$ defined on the upper half plane $\mathbb{H}$. We show a…

Probability · Mathematics 2018-09-25 Atul Shekhar

We study smoothness of generalized solutions of nonlocal elliptic problems in plane bounded domains with piecewise smooth boundary. The case where the support of nonlocal terms can intersect the boundary is considered. We announce…

Analysis of PDEs · Mathematics 2014-04-22 Pavel Gurevich

The Kr\"otz-Stanton Extension Theorem states that the orbit map of a K-finite vector in a Hilbert representation of a linear Lie group extends to a holomorphic map to a principal fibre bundle over the complex crown domain associated to the…

Representation Theory · Mathematics 2025-01-17 Tobias Simon

Rudin's version of the classical Julia-Wolff-Carath\'eodory theorem is a cornerstone of holomorphic function theory in the unit ball of $\mathbb{C}^d$. In this paper we obtain a complete generalization of Rudin's theorem for a holomorphic…

Complex Variables · Mathematics 2025-09-18 Leandro Arosio , Matteo Fiacchi

We prove that given any positive integer $k$, for each open set $\Omega$ and any closed subset $D$ of its closure such that $\Omega$ is locally an (epsilon,delta)-domain near points in the boundary of $\Omega$ not contained in $D$ there…

Analysis of PDEs · Mathematics 2012-08-22 Kevin Brewster , Dorina Mitrea , Irina Mitrea , Marius Mitrea

The solvability in Sobolev spaces is proved for divergence form second order elliptic equations in the whole space, a half space, and a bounded Lipschitz domain. For equations in the whole space or a half space, the leading coefficients…

Analysis of PDEs · Mathematics 2009-11-13 Hongjie Dong , Doyoon Kim

We look for minimal conditions on a two-dimensional metric surface $X$ of locally finite Hausdorff $2$-measure under which $X$ admits an (almost) parametrization with good geometric and analytic properties. Only assuming that $X$ is locally…

Metric Geometry · Mathematics 2021-06-16 Damaris Meier , Stefan Wenger

We consider a compact $n$-dimensional complex manifold endowed with a holomorphic line bundle that is semi-positive everywhere and positive at least at one point. Additionally, we have a smooth domain of this manifold whose Levi form has at…

Complex Variables · Mathematics 2025-06-03 Bingxiao Liu , George Marinescu , Huan Wang

We consider an elliptic boundary problem over a bounded region $\Omega$ in $\mathbb{R}^n$ and acting on the generalized Sobolev space $W^{0,\chi}_p(\Omega)$ for $1 < p < \infty$. We note that similar problems for $\Omega$ either a bounded…

Analysis of PDEs · Mathematics 2017-10-06 Robert Denk , Melvin Faierman

We show that a Lipschitz domain can be expanded solely near a part of its boundary, assuming that the part is enclosed by a piecewise C1 curve. The expanded domain as well as the extended part are both Lipschitz. We apply this result to…

Analysis of PDEs · Mathematics 2012-01-04 Jay Gopalakrishnan , Weifeng Qiu

For a self mapping $f:\mathbb{D}\to \mathbb{D}$ of the unit disk in $\mathbb{C}$ which has finite distortion, we give a separation condition on the components of the set where the distortion is large - say greater than a given constant -…

Complex Variables · Mathematics 2014-06-23 Riku Klén , Gaven J. Martin

In this paper, we prove a new continuous embedding theorem for fractional Sobolev spaces with variable exponents into variable exponent Lebesgue spaces on unbounded domains. As an application, we study a class of nonlocal elliptic problems…

Analysis of PDEs · Mathematics 2025-09-03 Abdelkrim Barbara , Ahmed Bousmaha , Mohammed Shimi

A novel extension of the canonical solitonic mKdV equation is introduced which admits hybrid Ermakov-Painlev\'e II symmetry reduction. Application of the latter is made to obtain exact solution of Airy-type to a class of moving boundary…

Analysis of PDEs · Mathematics 2025-12-03 Colin Rogers , Adriana C. Briozzo

We provide a complete characterization of those self-homeomorphisms of the unit circle that admit homeomorphic extensions to the unit disk belonging to bi--Orlicz--Sobolev spaces. Our results generalize classical criteria from the Sobolev…

Complex Variables · Mathematics 2026-01-22 Yizhe Zhu

We give direct proofs and constructions of the trace and extension theorems for Sobolev mappings in $W^{1, 1} (M, N)$, where $M$ is Riemannian manifold with compact boundary $\partial M$ and $N$ is a complete Riemannian manifold. The…

Analysis of PDEs · Mathematics 2025-02-25 Jean Van Schaftingen , Benoît Van Vaerenbergh