Results 51 to 60 of about 6,367 (167)

Lie symmetry analysis of (2+1)-dimensional time fractional Kadomtsev-Petviashvili equation [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
In this paper, Lie symmetry analysis method is applied to the (2+1)-dimensional time fractional Kadomtsev-Petviashvili (KP) equation with the mixed derivative of Riemann-Liouville time-fractional derivative and integer-order $x$-derivative.
Jicheng Yu, Yuqiang Feng
doaj   +1 more source

Predicting Non-Linear Flow Phenomena through Different Characteristics-Based Schemes

open access: yesAerospace, 2018
The present work investigates the bifurcation properties of the Navier–Stokes equations using characteristics-based schemes and Riemann solvers to test their suitability to predict non-linear flow phenomena encountered in aerospace applications.
Tom-Robin Teschner   +2 more
doaj   +1 more source

An In-Depth Investigation of the Riemann Zeta Function Using Infinite Numbers

open access: yesMathematics
This study focuses on an in-depth investigation of the Riemann zeta function. For this purpose, infinite numbers and rotational infinite numbers, which have been introduced in previous studies published by the author, are used.
Emmanuel Thalassinakis
doaj   +1 more source

A Direct Eulerian GRP Scheme for the Prediction of Gas-Liquid Two-Phase Flow in HTHP Transient Wells

open access: yesAbstract and Applied Analysis, 2013
A coupled system model of partial differential equations is presented in this paper, which concerns the variation of the pressure and temperature, velocity, and density at different times and depths in high temperature-high pressure (HTHP) gas-liquid two-
Jiuping Xu   +5 more
doaj   +1 more source

Survey and new results on boundary-value problems of singular fractional differential equations with impulse effects

open access: yesElectronic Journal of Differential Equations, 2016
Firstly we prove existence and uniqueness of solutions of Cauchy problems of linear fractional differential equations (LFDEs) with two variable coefficients involving Caputo fractional derivative, Riemann-Liouville derivative, Caputo type Hadamard ...
Yuji Liu
doaj  

An Explicit Numerical Method for the Fractional Cable Equation

open access: yesInternational Journal of Differential Equations, 2011
An explicit numerical method to solve a fractional cable equation which involves two temporal Riemann-Liouville derivatives is studied. The numerical difference scheme is obtained by approximating the first-order derivative by a forward difference ...
J. Quintana-Murillo, S. B. Yuste
doaj   +1 more source

Existence of Solutions for Riemann-Liouville Fractional Boundary Value Problem

open access: yesAbstract and Applied Analysis, 2014
By using the method of upper and lower solutions and fixed point theorems, the existence of solutions for a Riemann-Liouville fractional boundary value problem with the nonlinear term depending on fractional derivative of lower order is obtained under ...
Wenzhe Xie, Jing Xiao, Zhiguo Luo
doaj   +1 more source

The N-soliton solutions of the n-component generalized Sasa-Satsuma system: Riemann-Hilbert method

open access: yesNuclear Physics B
Using the Riemann-Hilbert method, the paper systematically investigates the n-component generalized Sasa-Satsuma system. By utilizing the Tu scheme, we systematically construct the n-component generalized Sasa-Satsuma integrable hierarchy, and obtain the
Zhiguo Ren, Jing Yu, Lin Huang
doaj   +1 more source

Riemann’s method and the problem of Cauchy [PDF]

open access: yesBulletin of the American Mathematical Society, 1951
openaire   +3 more sources

A geometrical summation method for the Riemann zêta function

open access: yes, 2019
In this paper, we introduce a geometrical summation method that makes the original Riemann series converge over the critical strip. This method gives an analytical function, that coincides with zêta. This point of view allows us to introduce a quantity of interest that seems to give a characterization of the non-trivial zeros of the Riemann zêta ...
openaire   +2 more sources

Home - About - Disclaimer - Privacy