Instruct: Classify the given review into positive or negative sentiment.
Query: Thumbs down

This is the book we used in my first undergraduate course in topology. I remember it as being one of the worst textbooks I ever came across in my undergraduate math studies. The explanations were too short and many definitions were buried into the text. I remember constantly having to flip through the pages of this book to find something I was looking for. Stay away from this book!