A book on fixed-point theory needs no introduction. It is a modern mathematics and research field for Ph.D. students. The subject is based on metric space, which has gained importance in modern times. The idea of fixed point theory being recent in the mathematics world is, that great care has been taken to explain each detail in such a lucid style that even a Graduate student. It is earnestly hoped that the book, the only of its kind, will be found immensely useful to teachers and students alike, studying the subject at a higher level. This book provides a firm foundation in fixed point theory.