Ebook: Conceptual Developments of 20th Century Field Theories

On the basis of the publisher's review and those of other readers, I had hoped that I'd be able to follow the path of conceptual developments. True, as advertised, the mathematical rigor was not excessive. Nonetheless, maybe because the author divided the topic into a series of detailed "cuts" at multiple levels, I found myself unable to keep track. If someone replied that the problem was me, not the book, I wouldn't argue.