"Zeropsis", as a word is a new term, it means, the study and analysis of the number zero. This book is called "Zeropsis I", being the first part of three volumes. It discusses the history of the number zero, and attacks the known problems of how we presently understand the number and sagaciously salutes the solutions and cognitions discovered. As in a demonstration of an application of these findings, it provides the proof that, the number zero is a prime number. This book re-introduces the fundamental concepts of binary operations, and progresses the reader to grasp the essential concepts, required, in-order to understand the new formulations in number systems. This book, by any means, must be a read all, for use in schools and any other forms of educational establishments with a mathematical curriculum. It is a necessary and sufficient need for the mathematician of tomorrow. Herein, is where you will find yourself within the realms of Rigid Logic. You will enjoy the mental stimulations beyond forms and forms of imaginations. "Zeropsis I", arrives you at the very front of all mathematical forums.