Results 1 to 10 of about 11,636,186 (273)

On Riemann method for solving a mixed problem

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The formula for solution of a problem for an equation with the higher partial derivative of the general type is constructed using Riemann method. In this problem the solution is found in the characteristic parallelepiped with separated by the non ...
A. N. Mironov
doaj   +2 more sources

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

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

Unsteady Dean flow formation in an annulus with partial slippage: A riemann-sum approximation approach

open access: yesResults in Engineering, 2020
This paper investigates time-dependent Dean Flow of an incompressible fluid under homogeneous slip, non-homogeneous slip, and no-slip boundary conditions. The fluid flow is due to the sudden application of an azimuthal pressure gradient.
Basant Kumar Jha, Yahaya Jibrin Danjuma
doaj   +1 more source

Simulation of transient mixed flows based on the exact Riemann solver

open access: yesShui kexue jinzhan, 2020
The Preissmann slot method is simple to simulate transient mixed flows, but it has obvious non-physical oscillation. The key to the application of this method is to suppress the non-physical oscillations.
Wanguang SUN   +3 more
doaj   +1 more source

Boundary control problem for the telegraph equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
In the paper we consider the boundary control problem for the telegraph equation. We study the case of the short period of control, when the initial and final data determine the solution in two regions, having the common part.
Elena A Kozlova
doaj  

Fourier coefficients associated with the Riemann zeta-function

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2016
We study the Riemann zeta-function $\zeta(s)$ by a Fourier series method. The summation of $\log|\zeta(s)|$ with the kernel $1/|s|^{6}$ on the critical line $\mathrm{Re}\; s = \frac{1}{2}$ is the main result of our investigation.
Yu.V. Basiuk, S.I. Tarasyuk
doaj   +1 more source

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