mmp
commented
7 months ago Yes, apologies, we haven't gotten those sections online yet.
That said, there aren't any substantial differences from the third edition (other than additions to the "Further Reading" sections for those topics to reflect more recent work.)
In the 4th edition, there are references to sections that are available in the online edition of the book https://www.pbr-book.org/4ed/Introduction/How_to_Proceed_through_This_Book#TheOnlineEdition. These sections don't appear to be listed in the online edition however. Are there any substantial differences from the corresponding sections of the thrid edition?