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الصياغة التغايرية لبعض الانظمة التفاضلية ذات التباطؤ المتغير == Variational Formulations of Some Variable Delay Differential Systems
Author name:
سارة علاء الدين عبد القادر
Supervisor name:
فاضل صبحي فاضل
General topic:
Mathematics
Specific topic:
Applied Mathematics
Degree:
Master
University:
Al-Nahrain University - College Of Science - Department Of Mathematics
Language:
English
University location:
Baghdad
Key words:
- الصياغة التغايرية
- المعادلات التفاضلية التباطؤية الاعتيادية
- المعادلات التفاضلية التباطؤية الجزئية
- طريقة رتز المباشرة
First pages:
27T1081 - p.pdf
Abstract:
The main theme of this work is to introduce the general form and fundamental concepts in ordinary and partial delay - differential equations with variable delays and then to find the variational formulation of delay - differential equations with variable delays in both cases, ordinary and partial and to provide the rules of minimizing the obtained functional in the subject of calculus of variation. Finally, to minimize the variational formulation using the direct - Ritz method and finding the approximate solution of delay - differential quations with variable delays.
