Quote by genericusrnme
I've never fully read Shankar's book but from what I have read it seems pretty similar to Sakurai's book, maybe a 'little' less advanced. The formalism chapter at the start will seem a little cryptic if your linear algebra is a little rusty, Sakurai's book does the formalism much better imo but if your linear algebra is fine, however, you won't have any bother with it.

thank you, my linear algebra is particularly weak, i will take a look at Sakurai's book.