Results 11 to 20 of about 6,367 (167)

Construction of global solutions for a symmetric system of Keyfitz–Kranzer type with three piecewise constant states

open access: yesAdvances in Difference Equations, 2019
The exact solutions of the Riemann problem for a symmetric system of Keyfitz–Kranzer type are obtained in fully explicit forms. Furthermore, the global solutions of the double Riemann problems are also constructed explicitly when the initial data are ...
Pengyan Wang, Chun Shen, Xiuli Lin
doaj   +1 more source

On the Riemann Function

open access: yesMathematics, 2018
Riemann’s method is one of the definitive ways of solving Cauchy’s problem for a second order linear hyperbolic partial differential equation in two variables. The first review of Riemann’s method was published by E.T.
Peter J. Zeitsch
doaj   +1 more source

Analysis of the Stability of the Riemann Problem for a Simplified Model in Magnetogasdynamics

open access: yesAdvances in Mathematical Physics, 2016
The generalized Riemann problem for a simplified model of one-dimensional ideal gas in magnetogasdynamics in a neighborhood of the origin (t>0) in the (x,t) plane is considered.
Yujin Liu, Wenhua Sun
doaj   +1 more source

Fungsi Zeta Riemann Genap Menggunakan Bilangan Bernoulli

open access: yesDesimal, 2019
In this article, we study about the value of Riemann Zeta Function for even numbers using Bernoulli number. First, we give some basic theory about Bernoulli number and Riemann Zeta function.
Ikhsan Maulidi   +2 more
doaj   +1 more source

Totally Volume Integral of Fluxes for Discontinuous Galerkin Method (TVI-DG) I-Unsteady Scalar One Dimensional Conservation Laws

open access: yesمجلة المختار للعلوم, 2017
The volume integral of Riemann flux in the discontinuous Galerkin (DG) method is introduced in this paper. The boundaries integrals of the fluxes (Riemann flux) are transformed into volume integral.
Ibrahim. M. Rustum, ElHadi. I. Elhadi
doaj   +1 more source

Precalculated arrays-based algorithms for the calculation of the Riemann zeta-function

open access: yesVilnius University Open Series, 2022
In this paper, we continue the study of efficient algorithms for the computation of the Riemann zeta function on the complex plane. We introduce two precalculated arrays-based modifications of MB-method.
Lukas Kuzma   +2 more
doaj   +1 more source

Artin's Conjecture, Turing's Method, and the Riemann Hypothesis [PDF]

open access: yesExperimental Mathematics, 2006
We present a group-theoretic criterion under which one may verify the Artin conjecture for some (non-monomial) Galois representations, up to finite height in the complex plane. In particular, the criterion applies to S5 and A5 representations. Under more general conditions, the technique allows for the possibility of verifying the Riemann hypothesis ...
openaire   +3 more sources

Riemann manifold Langevin methods on stochastic volatility estimation [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2017
In this paper we perform Bayesian estimation of stochastic volatility models with heavy tail distributions using Metropolis adjusted Langevin (MALA) and Riemman manifold Langevin (MMALA) methods. We provide analytical expressions for the application of these methods, assess the performance of these methodologies in simulated data and illustrate their ...
Mauricio Zevallos   +2 more
openaire   +2 more sources

Application of the Riemann method to the Bethe-Salpeter equation [PDF]

open access: yesCommunications in Mathematical Physics, 1968
The Bethe-Salpeter equation describing the interaction of two scalar particles via the exchange of a third scalar particle with mass μ≠0 is in configuration space a hyperbolic partial differential equation of fourth order which will be studied with the help of the Riemann method.
openaire   +3 more sources

Approximation in different smoothness spaces with the RAFU method

open access: yesApplied General Topology, 2014
The RAFU method is an original and unknown approximation procedure we can use in Approximation Theory. We know that the RAFU method provides a linear space uniformly dense in C[a,b] by using some separation conditions.
Eduardo Corbacho Cortés
doaj   +1 more source

Home - About - Disclaimer - Privacy