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We show that Pinney's equation [2] with a constant coefficient can be reduced to its linear part by a simple change of variables. Also, Pinney's original solution is simplified slightly.

Analysis of PDEs · Mathematics 2019-02-08 Philip Korman

In this paper we present a two-component generalization of the C-integrable Calogero equation (see [1]). This system is C-integrable as well, and moreover we show that the Calogero equation and its two-component generalization are solvable…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Maxim Pavlov

We present integral representations of solutions to division problems involving matrices of polynomials in several complex variables. We also find estimates of the polynomial degree of the solutions by means of careful degree estimates of…

Complex Variables · Mathematics 2008-06-16 Elin Götmark

Using continuation methods, we study the global solution structure of periodic solutions for a class of periodically forced equations, generalizing the case of relativistic pendulum. We obtain results on the existence and multiplicity of…

Analysis of PDEs · Mathematics 2016-10-07 Philip Korman

In this paper the Navier problem and the Dirichlet problem for Willmore curves in $\mathbb{R}^2$ is solved.

Analysis of PDEs · Mathematics 2015-01-19 Rainer Mandel

In this paper we prove the decidability of the HD0L ultimate periodicity problem.

Combinatorics · Mathematics 2013-01-03 Fabien Durand

A generalization of the law of total covariance is presented and proved.

Probability · Mathematics 2022-05-31 Charles W. Champ , Andrew V. Sills

We present a new recursion and Hamiltonian operators for the Viallet equation. This new recursion operator and the recursion operator found in [Theoretical and Mathematical Physics, 167:421--443 (2011), arXiv:1004.5346] satisfy the elliptic…

Exactly Solvable and Integrable Systems · Physics 2015-05-28 Alexander V. Mikhailov , Jing Ping Wang

In this paper we construct a global, continuous flow of solutions to the Camassa-Holm equation on the space H^1(R). In a previous paper [2], A. Bressan and the author constructed spatially periodic solutions, whereas in this paper the…

Analysis of PDEs · Mathematics 2007-05-23 Massimo Fonte

In this article uncoditional solvability of the Carleman-Vekua equation with a singular point is proved, the Riemann-Hilbert problem is solved integral representations of solutions, the strictures of their zeros and poles are recieved.

Complex Variables · Mathematics 2014-06-27 Aliaskar Tungatarov

We introduce new classes of solutions to the three dimensional Navier-Stokes equations in the whole and half spaces that add rotational correction to self-similar and discretely self-similar solutions. We construct forward solutions in…

Analysis of PDEs · Mathematics 2016-10-19 Zachary Bradshaw , Tai-Peng Tsai

In this paper the benefits of affine quantization method are highlighted through oscillation problems. We show how affine quantization is able to solve oscillation problems where canonical quantization fails.

Quantum Physics · Physics 2021-02-02 Isiaka Aremua , Laure Gouba

In this paper, we present a framework for getting a series of exact vacuum solutions to the Einstein equation. This procedure of resolution is based on a canonical form of the metric. According to this procedure, the Einstein equation can…

General Physics · Physics 2007-10-01 Ying-Qiu Gu

We consider steady solutions to the incompressible Euler equations in a two-dimensional channel with rigid walls. The flow consists of two periodic layers of constant vorticity separated by an unknown interface. Using global bifurcation…

Analysis of PDEs · Mathematics 2025-06-23 Alex Doak , Karsten Matthies , Jonathan Sewell , Miles H. Wheeler

We study orbit-finite systems of linear equations, in the setting of sets with atoms. Our principal contribution is a decision procedure for solvability of such systems. The procedure works for every field (and even commutative ring) under…

Computation and Language · Computer Science 2024-02-28 Arka Ghosh , Piotr Hofman , Sławomir Lasota

In this paper, using the technical tools in \cite{TW5}, we solve the complex Hessian equation on closed Hermitian manifolds, which generalizes the the K\"ahler case results in \cite{HMW} and \cite{DK}.

Differential Geometry · Mathematics 2018-03-16 Dekai Zhang

In this paper we study the the Gauss image problem, which is a generalization of the Aleksandrov problem in convex geometry. By considering a geometric flow involving Gauss curvature and functions of normal vectors and radial vectors, we…

Analysis of PDEs · Mathematics 2020-12-22 Li Chen , Di Wu , Ni Xiang

We present an algorithm of finding numerical solutions of pulsar equation. The problem of finding the solutions was reduced to finding expansion coefficients of the source term of the equation in a base of orthogo- nal functions defined on…

Astrophysics · Physics 2008-11-26 Lukasz Bratek , Marcin Kolonko

We show, that under natural assumptions, solutions of Dirichlet problems for uniformly elliptic divergence form operator can be approximated pointwise by solutions of some versions of Robin problems. The proof is based on stochastic…

Analysis of PDEs · Mathematics 2023-10-05 Andrzej Rozkosz , Leszek Slominski

In this paper, we will present a new iterative construction for the auxiliary equation of Waring's problem, which seems a little simpler than the one of so called "smooth numbers" in papers [4] and [8], and give same upper bounds of G(k) as…

Number Theory · Mathematics 2018-02-01 An-Ping Li