Hi, PF. I've got a question for you. Maybe this would be better posted in the science education or discussion sections, but it's directly related to QM. I'm just finishing up my undergrad coursework and I've taken QM using Griffiths. It's an okay book, but it does a bit of jumping around, and it's not fully rigorous mathematically as far as building up the formalism goes. I'm trying to latex my notes from the quarter in a way that's very thorough and I've been using Dirac to fill in all the gaps left by Griffiths. However, Dirac uses notation that I find strange and unnatural at times. Maybe some of it is just a touch outdated? (Bra-ket is not the problem. I'm totally fine with that.) Although very thorough, Dirac's writing can also be kind of clunky at times. Q: I was wondering if anyone knows of another QM book that presents the formalism as thoroughly as Dirac, so I have a second reference to crosscheck and reinforce my understanding.