(October 8, 2022 at 12:34 am)Jehanne Wrote:(October 7, 2022 at 11:37 pm)Fireball Wrote: We used Boas' book in our junior-level Mathematical Physics class. There was indeed a lot of linear algebra in it. That part was easier for me, as I had already studied LA before taking that class. Like I said, I had no dealings with QM after I graduated. Maybe your memory is better than mine from 40 years ago?
The only QM book that I have studied is David Griffiths', but ladder operators figure prominently in QM.
Mostly when discussing angular momentum/spin. There are also many approximation methods that relay on finding eigenvalues to matrices.