alt Hacker NewsIndeed! I meant that it's good to know Wald is mathematically modern and not encrusted with coordinates. Saves me buying another book :-D
(The comment I replied to mentioned both.)
Indeed! I meant that it's good to know Wald is mathematically modern and not encrusted with coordinates. Saves me buying another book :-D
(The comment I replied to mentioned both.)
I think it does a very good job of explaining the abstract index notation, which is superficially similar to coordinate notation but conceptually quite different.