Results 1 to 10 of about 143,321 (273)

The Goursat problem for one hyperbolic system of the third order differential equations with two independent variables

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
The solution of the Goursat problem for the system of the differential equations of the third order is received on the basis of Riemann method. The Riemann matrix expressed in terms of hypergeometric functions with matrix argument is received, using it ...
Aleksander A Andreev, Julia O Yakovleva
doaj   +3 more sources

Hermitian metrics with (anti-)self-dual Riemann tensor [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
Equations of (anti-)self-duality for the components of the LeviCivita connection of the Hermitian positive definite metric (not for the Riemann tensor) are compiled.
Leonid Krivonosov, Vyacheslav Luk'yanov
doaj   +1 more source

Toward a mathematical analysis for a model of suspension flowing down an inclined plane [PDF]

open access: yes, 2017
We consider the Riemann problem of the dilute approximation equations with spatiotemporally dependent volume fractions from the full model of suspension, in which the particles settle to the solid substrate and the clear liquid film flows over the ...
Matsue, Kaname, Tomoeda, Kyoko
core   +2 more sources

Riemann Invariants and Rank-k Solutions of Hyperbolic Systems [PDF]

open access: yes, 2005
In this paper we employ a "direct method" in order to obtain rank-k solutions of any hyperbolic system of first order quasilinear differential equations in many dimensions.
Burnat M   +19 more
core   +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 ...
Zevallos, Mauricio   +2 more
openaire   +2 more sources

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

Rational Solutions of the Painlev\'e-II Equation Revisited [PDF]

open access: yes, 2017
The rational solutions of the Painlev\'e-II equation appear in several applications and are known to have many remarkable algebraic and analytic properties. They also have several different representations, useful in different ways for establishing these
Miller, Peter D., Sheng, Yue
core   +3 more sources

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

On the energy dissipation rate of solutions to the compressible isentropic Euler system [PDF]

open access: yes, 2013
In this paper we extend and complement some recent results by Chiodaroli, De Lellis and Kreml on the well-posedness issue for weak solutions of the compressible isentropic Euler system in $2$ space dimensions with pressure law $p(\rho)=\rho^\gamma ...
Chiodaroli, Elisabetta, Kreml, Ondřej
core   +3 more sources

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