Instruct: Classify Amazon reviews into positive or negative sentiment
Query: topics covered are great but loses 3 stars because of ...

glaring mistakes all over the book.i've found at least 3 wrong definition of convexity in the book. some contradicing within a paragraph. wow do some proof reading?along with wrong definition for implicit function theorem in chapter 1 - missing minus sign in front.and look at page where they talk about epigraph and subgraph. and ... you get the point.i can't believe it has such basic definitions wrong.not to mention uncommon notations used for some analysis...not happy with the book.for optimization stick with Stephen Boyd, Bertsekas, or Luenberger.and for applying optimization tech to economics get simon, and blume2 stars might not seem a big deal to you but look at my rating history.i rarely go under 4 stars.stay away from this book. although if the author fixes those deluge of stupid mathematical mistakes this book has a potential to be 5 stars.