At the Department of Mathematics, College of Computer Science and Mathematics, a PhD dissertation by Luma Khalil Ahmed titled ‘The Zero Divisor Graph with Applications,’ was discussed to meet the requirements of the degree. The dissertation aimed at highlighting the greater degree to show the zero divisor and to identify some of its characteristics. Further, it attempts to provide classification for the two Gama functions, and to find out each of the head numbers, the color number, the class, the volume. Likewise, the Hosoya Multiplier, Whiter guide, the Multiplier of the limits of Cauchy-Schwartz Graph.