الفهرس 
Periodic SolutionsOnly 14 pages are availabe for public view
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Abstract
The partial di erential equitations (PDEs) are used to describe a wide range
of phenomena such as sound, heat, di usion, electrostatics, electrodynamics,
uid
dynamics,
exibility, gravity, and quantum mechanics. These equations play a
central role in the modeling of many chemical, physical and biological phenomena.
Therefore, the importance of getting exact and soliton solutions to PDE equations
in mathematics is an important problem that needs to many studies. So, in this
thesis, we present some of the methods recently used to solve nonlinear partial
di erential equations (NPDEs) that represent some of the physically relevant systems
in applied mathematics, applied physics, especially in optics,
uids and a
few works in electronics. Some problems were also presented and solutions were
found to be ill, whether exact or soliton solutions or both.