Book Description: 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. It 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. Here- in, 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. Author Biography: Charles M. Namakando, {Na-ma-can-dow} is the author of Return Migration in Zambia; A Consequential View, along with other research-papers in mathematical demography. He was formally Senior Lecturer at Lusaka Technical Trades Institute in Zambia and is now a Mathematics Teacher with Philadelphia Public Schools in the USA. He was born and educated in Zambia, where he obtained a Bachelor of Science, in Mathematics with Education in 1981, from the University of Zambia. Then, in 1990, he completed his Masters of Philosophy degree in Mathematical Demography, from the United Nations, Cairo Demographic Center in Egypt. Whilst he has taught and conducted research work in many schools and institutions around the world, his major focus, since he was fifteen years old, has been his independent work on the understanding of the number zero. It is through such efforts, that, he has made remarkable discoveries in mathematics over time.