I must say that this edition contains some severe errors. In several places the mathematics has been wrongly transferred over from the old edition in key definitions such as those of the wedge product (those should be tensor products on the RHS) and topological spaces (that's a J in (ii), not a T) and elsewhere in the book. I'm not sure how many there are in total so I write this as a caution that if you aren't sure what you're doing it might be wise to check out an older edition. I don't know how it's happened but it has.<br><br>Other than that, classic book and extremely useful for a starting-out theoretical or mathematical physicist.