After the development of manifolds and algebraic varieties in the previous century, mathematicians and physicists have continued to advance concepts of space. T

Most of mathematics is presented in this book, starting from the basic and elementary concepts to probing the more complex and advanced areas. Mathematics is ap

Nobel Prize–winning physicist Roger Penrose questions some of the most fashionable ideas in physics today, including string theory What can fashionable ideas,

From the Preface: "This book was written for the active reader. The first part consists of problems, frequently preceded by definitions and motivation, and some