الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This thesis consists of four chapters : Chapter 1 ”Rigged hilbert spaces and minimization of functions” consists of three sections, Chapter 2 ”Variational boundary-value problems and optimal control of a system Governed by a second order elliptic differential equation with an infinite number of variables” consists of three sections, Chapter 3 ”Optimal control of a system governed by parabolic operators with an infinite number of variables” consists of three sections, Chapter 4 ” Control of system governed by hyperbolic and by petrowsky type equations with an infinite number of variables” consists of three sections.