Results 31 to 40 of about 6,367 (167)
Summability methods based on the Riemann Zeta function [PDF]
International Journal of Mathematics and Mathematical Sciences, 1988 This paper is a study of summability methods that are based on the Riemann Zeta function. A limitation theorem is proved which gives a necessary condition for a sequence x to be zeta summable. A zeta summability matrix Zt associated with a real sequence t is introduced; a necessary and sufficient condition on the sequence t such that Zt maps l1 to l1 ...
openaire +3 more sources
On Cauchy problem for system of n Euler-Poisson-Darboux equations in the plane
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012 The system of Euler-Poisson-Darboux equations is considered, the Cauchy problem is solved for the case of real n×n matrix-coefficient with one real eigenvalue or two complex conjugate eigenvalues with real part in the interval (−1/2, 1/2).
Ekaterina A Maksimova
doaj
Open Mathematics, 2019 The solutions to the Riemann problem for the isentropic relativistic Euler system for the extended Chaplygin gas are constructed for all kinds of situations by using the method of phase plane analysis.
Zhang Yunfeng, Sun Meina, Lin Xiuli
doaj +1 more source
On the solution of the space-time fractional cubic nonlinear Schrödinger equation
Results in Physics, 2018 The space–time fractional nonlinear Schrödinger equation is studied based on the modified Riemann–Liouville derivative. The fractional mapping expansion method is used to find analytical solution of this model.
E.A. Yousif +2 more
doaj +1 more source
Riemann solutions for spacetime discontinuous Galerkin methods
Journal of Computational and Applied Mathematics, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Scott T. Miller, Reza Abedi
openaire +1 more source
On a proplem for generalized Boussinesq–Love equation
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2019 For a fourth-order equation with two independent variables a variant of the Goursat problem with data on two intersecting characteristics is considered.
Valentin Ivanovich Zhegalov
doaj
Monotone iterative method for two-point fractional boundary value problems
Advances in Difference Equations, 2018 In this work, we deal with two-point Riemann–Liouville fractional boundary value problems. Firstly, we establish a new comparison principle. Then, we show the existence of extremal solutions for the two-point Riemann–Liouville fractional boundary value ...
Bo Tang, Jing Zhao, Zhenhai Liu
doaj +1 more source
Advances in Multimedia, 2021 In order to solve the numerical method of nonconservative ideal hydrodynamics equations, the viscous perturbation technique for solving nonconservative hydrodynamics equations is improved and tested by solving the Riemann problem.
Huijing Zhan, Mingze Wu
doaj +1 more source
A note on Riemann’s method applied to the diffusion equation [PDF]
Quarterly of Applied Mathematics, 1950 The method of Riemann (or Green) is applied to the integration of the parabolic equation in m {m}
openaire +1 more source
Solution of the Cauchy problem for system of Euler-Poisson-Darboux equations
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011 The system of Euler-Poisson-Darboux equations is considered, the Cauchy problem is solved for the case, when characteristic numbers of matrix-coefficient are complex conjugate and having real part in the interval (−1/2, 0).
Ekaterina A Maksimova
doaj