12 of 13 people found the following review helpful:
4.0 out of 5 stars
Underrated Mathematics Text, July 10, 2007
This review is from: A Transition to Advanced Mathematics (Hardcover)
I've honestly never understood the negativity thrown towards this book.
This book introduces basic proof-writing techniques, naive set theory, cardinality, functions, and also includes a very brief introduction to abstract algebra and real analysis. I thought that the section on proofs was quite well done even though there are better textbooks which cover this topic more extensively with more examples. The examples are generally simple and are pulled almost exclusively from number theory, but they provide understanding. The set theory chapter is not very rigorous, but it meets the goals of the type of student who would take such a class. A more rigorous (i.e. axiomatic) introduction to set theory would require an entire semester, and the goal of this book is simply to provide students with just enough tools to prepare themselves for classes like Abstract/Modern Algebra, Real Analysis, and Set Theory, but not much more. Also, I consider the proofs to be generally well-written although there are occasional mistakes.
The chapters introducing abstract algebra and real analysis don't provide much information, but only serve to give students a taste of the fields. I felt that they should have either been omitted (since you won't learn much) or they should have been introduced with more rigor and explanation.
Some people have complained that the exercises were too hard. I felt that the opposite was true. All of the problems are either trivial or of medium difficulty. I think that the problem was that the proofs presented in the text were even easier. The proofs are generally well-written, but it would have been nice to see more challenging proofs to give the student a better idea of how to work the more challenging homework problems.
It's not the best or the worst text that you can find on this subject. At minimum, it's at least underrated (though overpriced).
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16 of 20 people found the following review helpful:
4.0 out of 5 stars
Read Carefully and Think!, January 25, 2006
This review is from: A Transition to Advanced Mathematics (Hardcover)
Firstly, I must clarify: other reviewers have said that the book claims 1 + 2 does not equal 3. They are not reading carefully enough. I have the 5th edition, and this is exactly what it says (on page 18 for the 5th edition).
"The sentence 'x1 is equal to x2 + x3' is an open sentence with three variables. If we denote this sentence by P(x1,x2,x3), then P(7,3,4) is true since 7 = 3 + 4, while P(1,2,3) is false."
Now to translate for them, in the case of P(1,2,3)
x1 = 1, x2 = 2 and x3 = 3. Thus the sentence says 1 = 2 + 3 which is false, not 1 + 2 = 3 as other reviewers have claimed. What is confusing is the order and the abstract expression. In the order given P(3,1,2) would say 3 = 1 + 2.
Now as for my rating, I do not claim that the book is ideal. But, it does fill a gap in math education, and there are not many other books like it. A good replacement would be an introduction to logic, or to set theory, but this book contains both. I hope we will see more books like this in the future, and if we do then we may eventually find one worth bragging about.
Currently, though, there is no such book that I know of, and believe me I have seen a lot of books. In the meantime this book can serve as a valuable reference. So, as per my title: read carefully and think! If you do that, then the contents of this book should be crystal clear to you.
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6 of 7 people found the following review helpful:
4.0 out of 5 stars
Not a Bad Textbook, November 9, 2006
This review is from: A Transition to Advanced Mathematics (Hardcover)
We've been using this in our Introduction to Mathematical Proofs class (an upper-level undergraduate math class). I was a little nervous after seeing so many bad reviews here, but it's been a fine textbook. It's easy to learn the material from the book, and the question/problem sets are useful too. I don't have any other books of this type to compare it to, of course, but the layout of the text and material is clear, with definitions and properties given as needed.
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