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The existence and uniqueness of the solution for the boundary values problem for systems of partial differential equations of second order

وحدانية و وجود الحل لمسألة قيم حدية لـ جملة معادلات تفاضلية جزئية من المرتبة الثانية

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 Publication date 2005
and research's language is العربية
 Created by Shamra Editor




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Most of mathematical physics problems can be translated into solve one partial differential equation or more with specific initial conditions and boundary conditions. This is called the boundary value problem for the differential equations. This paper studies the solution of systems of hyperbolic and parabolic partial differential equations assuming some boundary conditions in different domains in the plane xoy. In this paper we have proved theorem about the existence and uniqueness of the solutions. This article is considered to be a continuation to the works of Alimove, Ssallah Aldinov, Gooraev and Alhamad.......

References used
سميرنوف م. م. المعادلات التفاضلية المختلطة. موسكو 1985
فلاديميروف ف. ش. المعادلات الرياضية الفيزيائية. موسكو 1981
موسخيليشيفي ن. ي. المعادلات التكاملية الشاذة. موسكو 1962
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This research studies the distributive solutions for some partial differential equations of second order. We study specially the distributive solutions for Laplas equation, Heat equation, wave equations and schrodinger equation. We introduce the fundamental solutions for precedent equations and inference the distributive solutions by using the convolution of distributions concept. For that we use some of lemmas and theorems with proofs, specially for Laplas equation. And precedent some of concepts, defintions and remarks.
تتضمن الرسالة أربعة فصول : الفصل الأول : ويتضمن بعض المفاهيم والتعاريف والمبرهنات التي تتعلق بالبحث. الفصل الثاني : دراسة استقرار جملة معادلات تفاضلية خطية لا توقفيه ذات تأخير زمني . الفصل الثالث :دراسة استقرار حل جملة المعادلات التفاضلية الخطية ذات تأخير زمني . الفصل الرابع : دراسة استقرار حل المعادلات التفاضلية لا توقفية ذات تأخر زمني باستخدام نظرية النقطة الثابتة
We aim in this research to study the existence and uniqueness of strong solution for initial-boundary values problem for a semi-linear wave equation with the nonlinear boundary dissipation, by transforming it to a Cauchy problem with second order operator differential equations in Hilbert space. Therefore, we transform it, using Green's formula for a triple of Hilbert spaces.
We study the asymptotic behavior of solutions of a nonlinear differential equation. Using Bihari's integral inequality, we obtain sufficient conditions for all of continuable solutions to be asymptotic.
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