Results 11 to 20 of about 11,401 (255)

JUNCTION RIEMANN PROBLEM FOR SHALLOW WATER EQUATIONS IN NETWORKS [PDF]

open access: yesTASK Quarterly, 2018
In this paper, the Riemann solution of an extended Riemann problem in channel networks is presented. The Riemann problem at a junction network is well defined in the literature. However, it is limited to symmetric networks.
MOHAMED ABDELREHIM   +1 more
doaj   +2 more sources

Generalized Riemann problem for a totally degenerate hyperbolic system [PDF]

open access: yesElectronic Journal of Differential Equations, 2018
We consider the generalized Riemann problem for the Suliciu relaxation system in Lagrangian coordinates and we calculate the first-order expansion given by LeFloch and Raviart to verify our results, then we show the explicit solution for the ...
Richard De la cruz   +2 more
doaj   +3 more sources

The Riemann–Hilbert problem for certain poly domains and its connection to the Riemann problem [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2008
Boundary value problems in several complex variables are more exciting for poly-domains than for e.g. balls. The reason is that for poly-domains the distinguished boundary is multiply connected and hence index phenomena occur. In a recent paper [J. Math. Anal. Appl.
Alip Mohammed, Mohammed, Alip
openaire   +2 more sources

Riemann boundary-value problem for doubly-periodic bianalytic functions [PDF]

open access: yesBoundary Value Problems, 2018
In this paper, we study Riemann boundary-value problem for doubly-periodic bianalytic functions. By the decomposition of doubly-periodic polyanalytic functions, the problem is transformed into two equivalent and independent Riemann boundary-value ...
Huili Han, Hua Liu, Yufeng Wang
doaj   +2 more sources

A note on the solvability of homogeneous Riemann boundary problem with infinity index [PDF]

open access: yes, 2021
summary:In this note we establish a necessary and sufficient condition for solvability of the homogeneous Riemann boundary problem with infinity index on a rectifiable open curve.
Bory-Reyes, Juan
core   +1 more source

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

open access: yes, 2006
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.
Huard, Benoit, Grundland, A. Michel
core   +1 more source

Faithfulness of actions on Riemann-Roch spaces [PDF]

open access: yes, 2015
Given a faithful action of a finite group G on an algebraic curve X of genus g > 1, we give explicit criteria for the induced action of G on the Riemann-Roch space H^0(X,O_X(D)) to be faithful, where D is a G-invariant divisor on X of degree at least ...
Koeck, Bernhard, Tait, Joseph
core   +1 more source

Riemann boundary value problem for hyperanalytic functions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We deal with Riemann boundary value problem for hyperanalytic functions. Furthermore, necessary and sufficient conditions for solvability of the problem are derived.
Ricardo Abreu Blaya   +2 more
doaj   +3 more sources

Conditional Symmetries and Riemann Invariants for Hyperbolic Systems of PDEs [PDF]

open access: yes, 2007
This paper contains an analysis of rank-k solutions in terms of Riemann invariants, obtained from interrelations between two concepts, that of the symmetry reduction method and of the generalized method of characteristics for first order quasilinear ...
Huard, Benoit, Grundland, A. Michel
core   +1 more source

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