الفهرس 
PreliminariesOnly 14 pages are availabe for public view
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Abstract
Inverse problems are some of the most important mathematical problems in science and mathematics because they tell us about parameters that we cannot directly observe, they have wide applications in optics, radar, acoustics, communication theory, geophysics, oceanography, astronomy, and many other fields.The field of inverse problems was first discovered and introduced by soviet Armenian physicist, Vector Ambartsumian [2].
The inverse problems has been studied by many authors, Mahmoud M.El-Boray [17] in 2010 discussed the solvability of an inverse fractional abstract Cauchy problem.He proved, in 2002, the solution of some probability densities and fundamental solutions of fractional evaluation equations [11]. Also, Vasin and V.L.Kamysin [28] studied the the unique solvability of inverse problems for various parabolic equations.