With the success of its previous editions, Principles of Real Analysis, Third Edition continues to introduce students to the fundamentals of the theory of measure and functional analysis. In this thorough update, the authors have included a new chapter on Hilbert spaces as well as integrating over 150 new exercises throughout. The new edition covers the basic theory of integration in a clear, well-organized manner, using an imaginative and highly practical synthesis of the Daniell Method and the measure theoretic approach. Students will be challenged by the more than 600 exercises contained in the book. Topics are illustrated by many varied examples, and they provide clear connections between real analysis and functional analysis. It gives a unique presentation of integration theory. It contains over 150 new exercises integrated throughout the text. It is illustrated with new and varied examples in each chapter. It introduces topological ideas in a friendly manner. It offers a clear connection between real analysis and functional analysis, and includes brief biographies of mathematicians.