Results 11 to 20 of about 26,863 (194)

On the Riemann–Hilbert problem of a generalized derivative nonlinear Schrödinger equation [PDF]

open access: greenCommunications in Theoretical Physics, 2020
Abstract In this work, we present a unified transformation method directly by using the inverse scattering method for a generalized derivative nonlinear Schrödinger (DNLS) equation. By establishing a matrix Riemann–Hilbert problem and reconstructing potential function q (
Bei-Bei Hu, Ling Zhang, Tie-Cheng Xia
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The solvability of a kind of generalized Riemann–Hilbert problems on function spaces $H_{\ast }$ [PDF]

open access: goldJournal of Inequalities and Applications, 2020
Abstract In this paper, we study a kind of generalized Riemann–Hilbert problems (R-HPs) with several unknown functions in strip domains. We mainly discuss methods of solving R-HPs with two unknown functions and obtain general solutions and conditions of solvability on function spaces $H_{\ast }$ H ∗ .
Pingrun Li
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The Riemann Hilbert problem for generalized Q-holomorphic functions

open access: bronzeTurkish Journal of Mathematics, 2010
In this work, the classical Riemann Hilbert boundary value problem is extended to generalized Q-holomorphic functions.
Sezayi Hızlıyel, MEHMET ÇAĞLIYAN
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Riemann-Hilbert boundary value problems in BMO classes for generalized analytic functions

open access: bronzeВладикавказский математический журнал, 2011
В работе рассматривается разрешимость краевой задачи Римана - Гильберта в классе BMO для обобщенных аналитических функций в предположении, что коэффициент краевого условия принадлежит пространству мультипликаторов класса BMO. Ранее автором построены примеры, когда задача с неотрицательным индексом в такой наиболее стественной постановке неразрешима в ...
S. B. Klimentov
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Riemann-Hilbert Boundary Value Problem for Generalized Analytic Functions in Smirnov Classes

open access: green, 2014
The Riemann-Hilbert boundary value problem for generalized analytic functions in Smirnov classes is under consideration. The domain is supposed simply connected with Lyapunov or Radon boundary without cusps. In the work the special representation for generalized analytic functions of Smirnov classes is built.
SERGEY KLIMENTOV
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Generalization of I.Vekua's integral representations of holomorphic functions and their application to the Riemann–Hilbert–Poincaré problem [PDF]

open access: yesJournal of Function Spaces and Applications, 2011
I. Vekua’s integral representations of holomorphic functions, whose m-th derivative (m≥0) is Hӧlder-continuous in a closed domain bounded by the Lyapunov curve, are generalized for analytic functions whose m-th derivative is representable by a Cauchy ...
Vakhtang Kokilashvili   +1 more
doaj   +2 more sources

A Class of Nonlinear Generalized Riemann-Hilbert-Poincaré Problems for Holomorphic Functions

open access: bronzeZeitschrift für Analysis und ihre Anwendungen, 1987
By means of the theory of pseudo-monotone operators the existence of a solution of a class of nonlinear generalized Riemann-Hilbert-Poincaré problems for a holomorphic function in the unit disk is proved.
Lothar von Wolfersdorf
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The Riemann-Hilbert Problem and the Generalized Neumann Kernel on Un-Bounded Multiply Connected Regions

open access: diamondمجلة الباحث الجامعي للعلوم الانسانية
تناولت هذه الدراسة اشتقاق معادلة التكامل من الدرجة الثانية لفريدهولم مع نواة نيومان التي جرى تعميمها و المتعلقة بمسألة ريمان-هيلبرت المتعلقة بمناطق الضرب المترابطة المفتوحة. أظهرت إشتقاق معادلة التكامل معادلات تكامل ذو حدود قابلة للحل بشكل فريد لمسألة دريتشلت المعدلة على مناطق الضرب المترابطة المفتوحة.
Mohamed M. S. Nasser
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On the generalized Riemann–Hilbert problem with irregular singularities

open access: closedExpositiones Mathematicae, 2005
We give sufficient conditions, on data including the monodromy representation, the Stokes matrices and the Poincare ranks at prescribed singularities, to solve the generalized Riemann-Hilbert problem with irregular singularities. We recover in particular the irreducibility condition on the monodromy given by Bolibrukh and Kostov in the classical case ...
A.A. Bolibruch   +2 more
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