When approaching this book, I had several assumptions. The first assumption was that this book would be somewhat easy to follow. The second assumption was that it focused on 'Real' analysis as opposed to 'Complex' analysis.
Introductory Real Analysis is a textbook written by A N Kolmogorov and S V Fomin. Richard A Silverman provided the translation and did some editing to change the text. The book is quite thorough in its treatment of the subject.
I enjoyed the book for several reasons. It builds logically on itself. Although you might have to start at the beginning to know where it is going, it is difficult to lose your place. It introduces a theorem and provides the proof to it immediately. The way they presented Set Theory was helpful. Finally, the book includes problems to solve and build your understanding.
The reason I did not like the book is rather simple; it was too advanced for me, despite my reading this version. However, this only shows that I am lacking.
Amazing book !!! This book provides some really challenging exercises that demand you to think rather than memorising properties. The chapter on set theory then is essential to understand the notion of integral and derivative which are exposed in a clear and straightforward way.
Definitely not an introductory text, in comparison to say Rudin's principles book. Otherwise this book provides good coverage and explanations of basic topology/metric space theory, functional analysis, vector spaces and measure theory in a relatively comprehensible and well written manner.
I only read the parts on measure theory (the last four chapters plus the introductory chapter on set theory) as we used this book as the main reference in our measure theory course. I find the exposition to be clearly written and very informative. I did not have any prior experience with measure theory and I was able to follow the text fairly easily. It really helps that planar measure theory is developed first before delving into more general ideas. There are also numerous interesting exercises (no solutions). Some of them contain important concepts such as the Jordan measure/content (even though a direct comparison could have been made in the main text). The only thing missing (at least in my opinion) is the differentiation of parametric Lebesgue integrals, as it is required in functional analysis and the calculus of variations. Other than that, I recommend this book as an introduction to measure theory.