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We present a generation theorem for positive semigroups on an $L^1$ space. It provides sufficient conditions for the existence of positive and integrable solutions of initial-boundary value problems. An application to a two-phase cell cycle…

Functional Analysis · Mathematics 2020-06-03 Piotr Gwiżdż , Marta Tyran-Kamińska

A high precision, and space time fully decoupled, wavelet formulation numerical method is developed for a class of nonlinear initial boundary value problems. This method is established based on a proposed Coiflet based approximation scheme…

Numerical Analysis · Mathematics 2017-01-24 Jizeng Wang , Lei Zhang , You-He Zhou

In this work, the nonlinear optical response, and in particular, the high harmonic generation of semiconductors is addressed by using the Wannier gauge. One of the main problems in the time evolution of the Semiconductor Bloch equations…

Mesoscale and Nanoscale Physics · Physics 2019-11-20 R. E. F. Silva , F. Martín , M. Ivanov

In this article, the enumeration of partial chord diagrams is discussed via matrix model techniques. In addition to the basic data such as the number of backbones and chords, we also consider the Euler characteristic, the backbone spectrum,…

A procedure to recover explicitly self-adjoint matrix Dirac systems on semi-axis (with both discrete and continuous components of spectrum) from rational Weyl functions is considered. Its stability is proved. GBDT version of…

Spectral Theory · Mathematics 2018-03-20 Alexander Sakhnovich

This paper focuses on the initial- and boundary-value problem for the two-dimensional micropolar equations with only angular velocity dissipation in a smooth bounded domain. The aim here is to establish the global existence and uniqueness…

Analysis of PDEs · Mathematics 2017-09-20 Quansen Jiu , Jitao Liu , Jiahong Wu , Huan Yu

The present work is devoted to the study of a boundary value problem for second order linear differential equation set on singular cylindrical domain. This problem can be regarded via a natural change of variables as an elliptic abstract…

Functional Analysis · Mathematics 2018-09-10 Belkacem Chaouchi , Marko Kostic

The objective of this article is to study the boundary value problem for the general semilinear elliptic equation of second order involving $L^1$ functions or Radon measures with finite total variation. The study investigates the existence…

Analysis of PDEs · Mathematics 2018-08-22 Ratan Kr Giri , Debajyoti Choudhuri

We study second-order stochastic parabolic equations in a cylindrical domain with homogeneous Dirichlet boundary conditions. Under a natural compatibility condition on the gradient-type noise, we establish global Schauder estimates in…

Probability · Mathematics 2026-05-19 Kai Du

The aim of this paper is to find the numerical solutions of the second order linear and nonlinear differential equations with Dirichlet, Neumann and Robin boundary conditions. We use the Bernoulli polynomials as linear combination to the…

Numerical Analysis · Computer Science 2023-05-31 Md. Shafiqul Islam , Afroza Shirin

The Haar wavelet based quasilinearization technique for solving a general class of singular boundary value problems is proposed. Quasilinearization technique is used to linearize nonlinear singular problem. Second rate of convergence is…

Numerical Analysis · Mathematics 2017-11-30 Randhir Singh , Himanshu Gargyand , Apoorv Garg

We show how to assign, on two intersecting null hypersurfaces, initial data for the Einstein-Vlasov system in harmonic coordinates. As all the components of the metric appear in each component of the stress-energy tensor, the hierarchical…

General Relativity and Quantum Cosmology · Physics 2011-10-03 Tadmon Calvin

In the current paper we consider an inverse boundary value problem of electromagnetism with nonlinear Second Harmonic Generation (SHG) process. We show the unique determination of the electromagnetic material parameters and the SHG…

Analysis of PDEs · Mathematics 2020-09-10 Yernat Assylbekov , Ting Zhou

The analytical solution to the initial-boundary value problem for the cell growth equation was given in the paper Zaidi A. A., Van Brunt B., Wake G.C., Solutions to an advanced functional partial differential equation of the pantograph…

Analysis of PDEs · Mathematics 2023-07-10 Adolf Mirotin

This paper considers to the problems of diffraction of electromagnetic waves on a half-plane, which has a finite inclusion in the form of a Lipschitz curve. The diffraction problem formulated as boundary value problem for Helmholtz…

Mathematical Physics · Physics 2018-03-06 E. Lipachev

We analyze a class of initial-boundary value problems for the Degasperis-Procesi equation on the half-line. Assuming that the solution $u(x,t)$ exists, we show that it can be recovered from its initial and boundary values via the solution…

Exactly Solvable and Integrable Systems · Physics 2012-08-20 Jonatan Lenells

This is a noncommutative version of the previous work entitled "Deformation Expression for Elements of Algebras (I)." In general in a noncommutative algebra, there is no canonical way to express elements in univalent way, which is often…

Mathematical Physics · Physics 2012-02-13 Hideki Omori , Yoshiaki Maeda , Naoya Miyazaki , Akira Yoshioka

We deal with boundary value problems for second-order nonlinear elliptic equations in divergence form, which emerge as Euler-Lagrange equations of integral functionals of the Calculus of Variations built upon possibly anisotropic norms of…

Analysis of PDEs · Mathematics 2023-10-02 Carlo Alberto Antonini , Andrea Cianchi , Giulio Ciraolo , Alberto Farina , Vladimir Maz'ya

We give simple necessary and sufficient conditions for the $\frac{\partial}{\partial t}$-transcendence of the solutions to a parameterized second order linear differential equation of the form \frac{\partial^2 Y}{\partial x^2} - p…

Classical Analysis and ODEs · Mathematics 2013-06-07 Carlos E. Arreche

We study initial-boundary value problems for linear evolution equations of arbitrary spatial order, subject to arbitrary linear boundary conditions and posed on a rectangular 1-space, 1-time domain. We give a new characterisation of the…

Analysis of PDEs · Mathematics 2015-05-28 David A. Smith