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In present paper we study a boundary value problem for a mixed parabolic-hyperbolic type equation in a rectangular domain and prove the existence of unique solution of this problem. In theory of boundary value problems for second order…

Analysis of PDEs · Mathematics 2015-05-11 Djumaklych Amanov

We propose a high-order adaptive numerical solver for the semilinear elliptic boundary value problem modelling magnetic plasma equilibrium in axisymmetric confinement devices. In the fixed boundary case, the equation is posed on curved…

Computational Physics · Physics 2021-05-28 Tonatiuh Sánchez-Vizuet , Manuel E. Solano , Antoine J. Cerfon

In the paper boundary-value problem for a multidimensional system of partial differential equations with fractional derivatives in Riemann-Liouville sense with constant coefficients is studied in a rectangular domain. The existence and…

Analysis of PDEs · Mathematics 2018-06-25 M. O. Mamchuev

In the present paper we establish the solvability of the Regularity boundary value problem in domains with (flat and Lipschitz) lower dimensional boundaries for operators whose coefficients exhibit small oscillations analogous to the…

Analysis of PDEs · Mathematics 2022-08-02 Zanbing Dai , Joseph Feneuil , Svitlana Mayboroda

A boundary value problem for a fractional power of the second-order elliptic operator is considered. It is solved numerically using a time-dependent problem for a pseudo-parabolic equation. For the auxiliary Cauchy problem, the standard…

Numerical Analysis · Computer Science 2015-06-18 Petr N. Vabishchevich

A regular elliptic boundary-value problem over a bounded domain with a smooth boundary is studied. We prove that the operator of this problem is a Fredholm one in the two-sided refined scale of the functional Hilbert spaces and generates a…

Analysis of PDEs · Mathematics 2009-03-30 Vladimir A. Mikhailets , Aleksandr A. Murach

A nonuniform Neumann boundary-value problem is considered for the Poisson equation in a thin domain $\Omega_\varepsilon$ coinciding with two thin rectangles connected through a joint of diameter ${\cal O}(\varepsilon)$. A rigorous procedure…

Analysis of PDEs · Mathematics 2020-01-07 A. V. Klevtsovskiy , T. A. Mel'nyk

We study linear and quasilinear Venttsel boundary value problems involving elliptic operators with discontinuous coefficients. On the base of the a priori estimates obtained, maximal regularity and strong solvability in Sobolev spaces are…

Analysis of PDEs · Mathematics 2020-10-20 Darya E. Apushkinskaya , Alexander I. Nazarov , Dian K. Palagachev , Lubomira G. Softova

We compute the continuum limit of the spectra for the XX-model with arbitrary complex boundary fields. In the case of hermitian boundary terms one obtains the partition functions of the free compactified boson field on a cylinder with…

Statistical Mechanics · Physics 2009-10-31 Ulrich Bilstein

We provide a higher order boundary Harnack inequality for harmonic functions in slit domains. As a corollary we obtain the $C^\infty$ regularity of the free boundary in the Signorini problem near non-degenerate points.

Analysis of PDEs · Mathematics 2014-06-24 Daniela De Silva , Ovidiu Savin

In this article, the authors survey and review the studies of boundary value problems for regular functions in Clifford analysis, which include theoretical foundations and useful methods. Its theoretical bases consist of the generalized…

Complex Variables · Mathematics 2025-09-16 J. Y. Du , P. Dang

The stationary, axisymmetric reduction of the vacuum Einstein equations, the so-called Ernst equation, is an integrable nonlinear PDE in two dimensions. There now exists a general method for analyzing boundary value problems for integrable…

Exactly Solvable and Integrable Systems · Physics 2009-11-11 J. Lenells , A. S. Fokas

We study multidimensional difference equations with a continual variable in the Sobolev--Slobodetskii spaces. Using ideas and methods of the theory of boundary value problems for elliptic pseudo differential equations we suggest to consider…

Analysis of PDEs · Mathematics 2015-11-11 Alexander Vasilyev , Vladimir Vasilyev

A new boundary value problem for partial differential equations is discussed. We consider an arbitrary solution of an elliptic or parabolic equation in a given domain and no boundary conditions are assumed. We study which restrictions the…

Analysis of PDEs · Mathematics 2013-12-17 V. Zh. Sakbaev , I. V. Volovich

We study the eikonal equation on the Sierpinski gasket in the spirit of the construction of the Laplacian in Kigami [8]: we consider graph eikonal equations on the prefractals and we show that the solutions of these problems converge to a…

Analysis of PDEs · Mathematics 2014-04-15 Fabio Camilli , Raffaela Capitanelli , Claudio Marchi

It is well known that derivatives of solutions to elliptic boundary value problems may become unbounded near the corner of a domain with a conical singularity, even if the data are smooth. When the corner domain is approximated by more…

Analysis of PDEs · Mathematics 2025-10-08 Martin Costabel , Monique Dauge

We consider (locally) energy finite coordinates associated with a strongly local regular Dirichlet form on a metric measure space. We give coordinate formulas for substitutes of tangent spaces, for gradient and divergence operators and for…

Probability · Mathematics 2018-06-29 Michael Hinz , Alexander Teplyaev

We present a general $L_p$-solvability framework for both the classical and time-fractional heat equations in non-smooth domains under the zero Dirichlet boundary condition. We consider domains $\Omega$ admitting the Hardy inequality: There…

Analysis of PDEs · Mathematics 2025-12-17 Jinsol Seo

The semi-classical quantisation of the two lowest energy static solutions of boundary sine-Gordon model is considered. A relation between the Lagrangian and bootstrap parameters is established by comparing their quantum corrected energy…

High Energy Physics - Theory · Physics 2008-11-26 M. Kormos , L. Palla

We consider second order uniformly elliptic operators of divergence form in $\R^{d+1}$ whose coefficients are independent of one variable. For such a class of operators we establish a factorization into a product of first order operators…

Analysis of PDEs · Mathematics 2013-07-25 Yasunori Maekawa , Hideyuki Miura