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A new computational method to solve the hyperbolic (Vlasov) equation and the elliptic (Poisson-like) equation at the polar axis is proposed. It is shown that the value of a scalar function at the polar axis can be predicted by its…

Computational Physics · Physics 2025-09-30 Tiannan Wu , Zihao Wang , Shaojie Wang

We present the first implementation of hyperbolic thermal conduction in smoothed particle hydrodynamics (SPH). Hyperbolic conduction is a physically-motivated alternative to traditional, parabolic conduction. It incorporates a relaxation…

Instrumentation and Methods for Astrophysics · Physics 2023-10-25 N. A. Owens , J. Wadsley

A quantum equation-of-state model is presented and applied to the calculation of high-pressure shock Hugoniot curves beyond the asymptotic fourfold density, close to the maximum compression where quantum effects play a role. An analytical…

Plasma Physics · Physics 2009-11-13 J. C. Pain

Consider the planar restricted $(N+1)$-body problem with trajectories of the $N(\ge 2)$ primaries forming a collision-free periodic solution of the $N$-body problem, for any positive energy $h$ and directions $\theta_{\pm} \in [0, 2\pi)$,…

Dynamical Systems · Mathematics 2022-11-03 Guowei Yu

We characterize certain weighted Hardy spaces on the unit disk and completely describe their dual spaces.

Complex Variables · Mathematics 2015-08-31 Nihat Gökhan Göğüş

In this article we establish the radial symmetry of positive solutions of a p- Laplace equation in the Hyperbolic space, which is the Euler Lagrange equation of the p- Poincare Sobolev inequality in the Hyperbolic space. We will also…

Analysis of PDEs · Mathematics 2025-02-25 Ramya Dutta , Sandeep Kunnath

In previous work a probabilistic approach to controlling difficulties of density in hyperbolic space led to a workable notion of optimal density for packings of bodies. In this paper we extend an ergodic theorem of Nevo to provide an…

Metric Geometry · Mathematics 2007-05-23 Lewis Bowen , Charles Radin

In this paper we improve the approach of a previous paper about the domino problem in the hyperbolic plane, see arXiv.cs.CG/0603093. This time, we prove that the general problem of the hyperbolic plane with \`a la Wang tiles is undecidable.

Computational Geometry · Computer Science 2007-05-23 Margenstern Maurice

We construct canonical intertwining semi-models with Kobayashi hyperbolic base space for holomorphic self-maps of complex manifolds which are univalent on some absorbing cocompact hyperbolic domain. In particular, in the unit ball we solve…

Complex Variables · Mathematics 2014-10-28 Leandro Arosio , Filippo Bracci

In this short note, we provide the well-posedness for an hyperbolic-hyperbolic-elliptic system of PDEs describing the motion of collision free-plasma in magnetic fields. The proof combines a pointwise estimate together with a bootstrap type…

Analysis of PDEs · Mathematics 2023-09-14 Diego Alonso-Orán , Rafael Granero-Belinchón

The merits of different analytical equations of state for the hard-sphere system with respect to the recently computed high-accuracy value of the freezing-point packing fraction are assessed. It is found that the Carnahan-Starling-Kolafa…

Soft Condensed Matter · Physics 2014-04-08 Miguel Robles , Mariano López de Haro , Andrés Santos

We perform extensive MD simulations of two-dimensional systems of hard disks, focusing on the \emph{on}-collision statistical properties. We analyze the distribution functions of velocity, free flight time and free path length for packing…

Statistical Mechanics · Physics 2015-09-02 Alessandro Taloni , Yasmine Meroz , Adrián Huerta

In this paper, we establish a curvature estimate for semi-convex solutions of Hessian equations in hyperbolic space. We also obtain a curvature estimate for admissible solutions to prescribed curvature measure type problem in hyperbolic…

Differential Geometry · Mathematics 2023-02-28 Siyuan Lu

We prove existence and uniqueness of an unstable manifold for a degenerate hyperbolic map of the plane arising in statistics.

Dynamical Systems · Mathematics 2021-10-06 Charles Fefferman

The goal of this note is to construct a class of traveling solitary wave solutions for the compound Burgers-Korteweg-de Vries equation by means of a hyperbolic ansatz.

Analysis of PDEs · Mathematics 2009-11-11 Claire David , Rasika Fernando , Zhaosheng Feng

This paper provides a methodology of verified computing for solutions to 1-dimensional advection equations with variable coefficients. The advection equation is typical partial differential equations (PDEs) of hyperbolic type. There are few…

Numerical Analysis · Mathematics 2019-07-03 Akitoshi Takayasu , Suro Yoon , Yasunori Endo

An equation of state of the hard sphere fluid which is not analytical at the freezing density is proposed and tested. The nonanalytical term is based on the the classical nucleation theory and is able to capture the observed ``anomalous…

Statistical Mechanics · Physics 2016-07-06 J. Kolafa

The hard disc system plays a fundamental role in the study of two-dimensional matters [1-3]. High-precision compressibility data from computer simulations have been reported for all the phases and phase transition regions [4-15]. In…

Soft Condensed Matter · Physics 2021-06-02 Hongqin Liu

The Leray-Hopf solutions to the Navier-Stokes equation are known to be unique on $\R^{2}$. In our previous work we showed the breakdown of uniqueness in a hyperbolic setting. In this article, we show how to formulate the problem in order so…

Analysis of PDEs · Mathematics 2013-09-16 Chi Hin Chan , Magdalena Czubak

This paper studies the Cauchy problem for variable coefficient weakly hyperbolic first order systems of partial differential operators. The hyperbolicity assumption is that for each $t, x$ the principal symbol is hyperbolic. No hypothesis…

Analysis of PDEs · Mathematics 2019-11-07 Ferruccio Colombini , Tatsuo Nishitani , Jeffrey Rauch
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