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In this article we study the Cauchy problem for a new class of parabolic-type pseudodifferential equations with variable coefficients for which the fundamental solutions are transition density functions of Markov processes in the four…

Analysis of PDEs · Mathematics 2013-12-10 O. F. Casas-Sánchez , W. A. Zúñiga-Galindo

Contents 1 Mappings and distortion 2 The mathematics of good behavior much of the time, and the BMO frame of mind 3 Finite polyhedra and combinatorial parameterization problems 4 Quantitative topology, and calculus on singular spaces 5…

Metric Geometry · Mathematics 2016-09-07 Stephen Semmes

We study whether a modified version of Tikhonov regularization can be used to identify several local sources from Dirichlet boundary data for a prototypical elliptic PDE. This paper extends the results presented in [5]. It turns out that…

Optimization and Control · Mathematics 2020-11-10 Ole Løseth Elvetun , Bjørn Fredrik Nielsen

In this paper we obtain existence results for the positive solution of a singular elliptic boundary value problem. To prove the main results we use comparison arguments and the method of sub-super solutions combined with a procedure which…

Analysis of PDEs · Mathematics 2011-05-16 Dragos-Patru Covei

We introduce a universal framework for boundary transfer matrices, inspired by Sklyanin's two-row transfer matrix approach for quantum integrable systems with boundary conditions. The main examples arise from quantum symmetric pairs of…

Representation Theory · Mathematics 2025-10-22 Andrea Appel , Bart Vlaar

We study a general discrete boundary value problem in Sobolev--Slobodetskii spaces in a plane quadrant and reduce it to a system of integral equations. We show a solvability of the system for a small size of discreteness starting from a…

Analysis of PDEs · Mathematics 2023-04-11 Vladimir Vasilyev , Alexander Vasilyev , Anastasia Mashinets

In the present paper we develop an approach to obtain sharp spectral asymptotics for Steklov type problems on planar domains with corners. Our main focus is on the two-dimensional sloshing problem, which is a mixed Steklov-Neumann boundary…

Spectral Theory · Mathematics 2025-01-28 Michael Levitin , Leonid Parnovski , Iosif Polterovich , David A. Sher

The Scaled Boundary Finite Element Method is a novel semi-analytical method jointly developed by Chongmin Song and John P Wolf to solve problems in elastodynamics and allied problems in civil engineering. This novel method has been recently…

Computational Physics · Physics 2007-05-23 V. S. Prasanna Rajan

Using the variational approach and the critical point theory, we established several criteria for the existence of at least one nontrivial solution for a discrete elliptic boundary value problem with a weight $p(\cdot, \cdot)$ and depending…

Analysis of PDEs · Mathematics 2019-09-30 Mohamed Ousbika , Zakaria El Allali , Lingju Kong

By employing a novel generalization of the inverse scattering transform method known as the unified transform or Fokas method, it can be shown that the solution of certain physically significant boundary value problems for the elliptic…

Analysis of PDEs · Mathematics 2020-02-14 J. Lenells , A. S. Fokas

Let $\{v_{\alpha}\}$ be a system of polynomial solutions of the parabolic equation $a_{hk}\partial_{x_{h}x_{k}}u - \partial_t u =0$ in a bounded $C^1$-cylinder $\Omega_{T}$ contained in $\mathbb{R}^{n+1}$. Here $a_{hk}\partial_{x_{h}x_{k}}$…

Analysis of PDEs · Mathematics 2026-02-18 Alberto Cialdea , Carmine Sebastiano Mare

We present an overview of some significant results of Thurston and their impact on mathematics. The final version of this paper will appear as Chapter 1 of the book "In the tradition of Thurston: Geometry and topology", edited by K. Ohshika…

Geometric Topology · Mathematics 2020-12-09 Ken'Ichi Ohshika , Athanase Papadopoulos

This paper is on further development of discrete complex analysis introduced by R. Isaacs, J. Ferrand, R. Duffin, and C. Mercat. We consider a graph lying in the complex plane and having quadrilateral faces. A function on the vertices is…

Combinatorics · Mathematics 2013-04-01 Mikhail Skopenkov

We study a model elliptic pseudo-differential equation and simplest boundary value problems for a half-space and a special cone in Sobolev--Slobodetskii spaces which have different smoothness with respect to separate variables. Sufficient…

Analysis of PDEs · Mathematics 2023-02-21 Vladimir Vasilyev , Victor Polunin , Igor Shmal

The Tricomi equation is a second-order partial differential equation of mixed elliptic-hyperbolic type. It was first analyzed in the work by Francesco Giacomo Tricomi (1923) on the well-posedness of a boundary value problem. The Tricomi…

Analysis of PDEs · Mathematics 2015-07-28 Gui-Qiang G. Chen

In this paper, we use a probabilistic approach to show that there exists a unique, bounded continuous solution to the Dirichlet boundary value problem for a general class of second order non-symmetric elliptic operators $L$ with singular…

Analysis of PDEs · Mathematics 2015-04-17 Chuan-Zhong Chen , Wei Sun , Jing Zhang

Contents of Part 1: 1. Status of the Standard Model(P.H. Frampton), 2. Cosmological Constraints from MBA and Polarization (A. Melchiorri), 3. AdS/CFT Correspondence and Unification at About 4 TeV (P.H. Frampton), 4. New Solutions in String…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. H. Frampton , A. Melchiorri , L. Bonora , A. Borstnik Bracic , N. Mankoc Borstnik , H. B. Nielsen , C. D. Froggatt , Q. Shafi , E. Alvarez , F. Lizzi

We construct positive singular solutions for the problem $-\Delta u=\lambda \exp (e^u)$ in $B_1\subset \mathbb{R}^n$ ($n\geq 3$), $u=0$ on $\partial B_1$, having a prescribed behaviour around the origin. Our study extends the one in Y.…

Analysis of PDEs · Mathematics 2019-06-13 Marius Ghergu , Olivier Goubet

We review a finite-sampling exponential bound due to Serfling and discuss related exponential bounds for the hypergeometric distribution. We then discuss how such bounds motivate some new results for two-sample empirical processes. Our…

Statistics Theory · Mathematics 2017-02-20 Evan Greene , Jon A. Wellner

In this paper, a theory of hyperelliptic functions based on multidimensional sigma functions is developed and explicit formulas for hyperelliptic solutions to the Kadomtsev-Petviashvili equations KP-I and KP-II are obtained. The…

Mathematical Physics · Physics 2025-07-21 Takanori Ayano , Victor M. Buchstaber