Very basic questions about operators in QM

[olgerm]

My recommendation as the introductory QM textbook is

J. J. Sakurai and S. Tuan, Modern Quantum Mechanics,
Addison Wesley (1993).

I took "David J. Griffith, Introduction to Quantum Mechanics". Also tried to read "J. J. Sakurai and S. Tuan, Modern Quantum Mechanics", but "David J. Griffith, Introduction to Quantum Mechanics" seems more easily understandable.

 

[kered rettop]

Who needs a textbook when you have @vanhees71 !

True, but sometimes having @vanhees71, makes you realize you should have read your textbook.