Approximate analytic solution of composed linear descriptor operator system using functional analysis approach | ||
| International Journal of Nonlinear Analysis and Applications | ||
| مقاله 28، دوره 13، شماره 1، خرداد 2022، صفحه 365-378 اصل مقاله (547.22 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2022.5503 | ||
| نویسندگان | ||
| Hams M. Al-Helli* ؛ Radhi A. Zaboon | ||
| Department of Mathematics, College of Science, Mustansiriyah University, Baghdad, Iraq | ||
| چکیده | ||
| This paper focuses on the solvability and approximate analytic solution of composed linear descriptor operator with constant coefficient, using functional (Variational) approach. This approach is based on finding a suitable functional form whose critical points are the solution of the proposed problem and the solution of a proposed problem is a critical point of the obtained variational functional defined on suitable reflexive Hilbert space since the existence of this approach is based on the symmetry and positivity of the composed linear descriptor operator on Hilbert space. The necessary mathematical requirements are derived and proved. A step-by-step computational algorithm is proposed. Illustration and computation with the giving exact solution are also proposed. | ||
| کلیدواژهها | ||
| Descriptor System؛ Differential-Algebraic Operator equation؛ Functional Analysis؛ Variational Formulation؛ {1}-Inverse Matrix؛ Ritz Method | ||
| مراجع | ||
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