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We prove the solvability of a Dirichlet problem for flat hermitian metrics on Hilbert bundles over compact Riemann surfaces with boundary. We also prove a factorization result for flat hermitian metrics on doubly connected domains.

Complex Variables · Mathematics 2018-04-17 Kuang-Ru Wu

The three-dimensional Hilbert transform takes scalar data on the boundary of a domain in R3 and produces the boundary value of the vector part of a quaternionic monogenic (hyperholomorphic) function of three real variables, for which the…

Analysis of PDEs · Mathematics 2024-10-15 Briceyda B. Delgado , R. Michael Porter

In this paper, we solve the $p$-Dirichlet problem for Besov boundary data on unbounded uniform domains with bounded boundaries when the domain is equipped with a doubling measure satisfying a Poincar\'{e} inequality. This is accomplished by…

Analysis of PDEs · Mathematics 2023-08-09 Ryan Gibara , Riikka Korte , Nageswari Shanmugalingam

Domain transfer (DT) maps source to target distributions and supports tasks such as unsupervised image-to-image translation, single-cell analysis, and cross-platform medical imaging. However, DT is fundamentally ill-posed: push-forward…

Machine Learning · Computer Science 2026-05-19 Sagar Shrestha , Subash Timilsina , Hoang-Son Nguyen , Xiao Fu

This paper introduces a learning scheme to construct a Hilbert space (i.e., a vector space along its inner product) to address both unsupervised and semi-supervised domain adaptation problems. This is achieved by learning projections from…

Computer Vision and Pattern Recognition · Computer Science 2017-04-18 Samitha Herath , Mehrtash Harandi , Fatih Porikli

Diffuse domain methods (DDMs) have garnered significant attention for approximating solutions to partial differential equations on complex geometries. These methods implicitly represent the geometry by replacing the sharp boundary interface…

Analysis of PDEs · Mathematics 2025-04-25 Toai Luong , Tadele Mengesha , Steven M. Wise , Ming Hei Wong

We present a comparison between the performance of solvers based on Nystr\"om discretizations of several well-posed boundary integral equation formulations of Helmholtz transmission problems in two-dimensional Lipschitz domains.…

Numerical Analysis · Mathematics 2016-05-13 Victor Dominguez , Mark Lyon , Catalin Turc

We consider the singular Liouville equation and the Henon-Lane-Emden problem on simply connected planar domains. We show that any solution to each problem must satisfy a uniform bound on the mass. The same results applies to some systems…

Analysis of PDEs · Mathematics 2018-12-11 Luca Battaglia

We study a free transmission problem driven by degenerate fully nonlinear operators. Our first result concerns the existence of solutions to the associated Dirichlet problem. By framing the equation in the context of viscosity inequalities,…

Analysis of PDEs · Mathematics 2021-11-05 Gerardo Huaroto , Edgard A. Pimentel , Giane C. Rampasso , Andrzej Święch

The purpose of this article is to explore the properties of integrable, purely transmitting, defects placed at the junctions of several one-dimensional domains within a network. The defect sewing conditions turn out to be quite restrictive…

High Energy Physics - Theory · Physics 2020-12-02 E. Corrigan , C. Zambon

The H^2-regularity of variational solutions to a two-dimensional transmission problem with geometric constraint is investigated, in particular when part of the interface becomes part of the outer boundary of the domain due to the saturation…

Analysis of PDEs · Mathematics 2021-03-15 Philippe Laurençot , Christoph Walker

This paper is concerned with an inverse transmission problem for recovering the shape of a penetrable rectangular grating sitting on a perfectly conducting plate. We consider a general transmission problem with the coefficient \lambda\neq 1…

Analysis of PDEs · Mathematics 2023-04-24 Jianli Xiang , Guanghui Hu

Let $\hat \Omega \subset \mathbb R^2$ be a bounded domain with smooth boundary and $\hat \sigma$ a smooth anisotropic conductivity on $\hat \Omega$. Starting from the Dirichlet-to-Neumann operator $\Lambda_{\hat \sigma}$ on $\partial \hat…

Analysis of PDEs · Mathematics 2014-02-07 Gennadi Henkin , Matteo Santacesaria

We prove Bertini type theorems for the inverse image, under a proper morphism, of any Schubert variety in an homogeneous space. Using generalisations of Deligne's trick, we deduce connectedness results for the inverse image of the diagonal…

Algebraic Geometry · Mathematics 2010-05-05 Nicolas Perrin

We consider weighted harmonic Bergman spaces on upper half-space with weights depending only on the vertical coordinate. In these settings, we give full asymptotic expansion of weighted harmonic Bergman kernel as well as full asymptotic…

Complex Variables · Mathematics 2023-12-15 Jaroslav Bradík

Soliton transport in tube-like networks is studied by solving the nonlinear Schroedinger equation (NLSE) on finite thickness ("fat") graphs. The dependence of the solution and of the reflection at vertices on the graph thickness and on the…

Pattern Formation and Solitons · Physics 2015-06-19 Hannes Uecker , Daniel Grieser , Zarif Sobirov , Doniyor Babajanov , Davron Matrasulov

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

We derive and establish a solution concept for the linear mountain wave problem in two dimensions. After linearizing the governing equations and a change of variables, the problem can be stated as a Dirichlet boundary value problem for a…

Analysis of PDEs · Mathematics 2026-03-24 Adrian Constantin , Jörg Weber

In this paper, we consider a family of seamlessly coupled nonlocal models associated with transmission conditions across an interface. The models are derived from the variation of a parameterized family of energies consisting of a…

Analysis of PDEs · Mathematics 2025-09-30 Qiang Du , Zhaolong Han , Tadele Mengesha , James M. Scott , Xiaochuan Tian

An optimal transport problem on finite spaces is a linear program. Recently, a relaxation of the optimal transport problem via strictly convex functions, especially via the Kullback--Leibler divergence, sheds new light on data sciences.…

Optimization and Control · Mathematics 2021-03-03 Asuka Takatsu