Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very nice text

This book clearly does NOT suppose "number theory"---unless you mean that a even number plus an even number is even!The point of this book is to help students make the transition from plug and chug calculus, linear algebra, etc, to thinking through WHY theorems are true, and how to go about proving them. No, the material is not advanced. The focus is on the language and techniques of proofs. Who wants to struggle proving the fundamental theorem of algebra without even knowing what induction is?I've taught with this text for several years now and find it presentation and coverage, as do the students. Yes, the cost is outrageous...as are most textbooks. Buy it used.