Hoping to read griffiths this summer although i won't really have a chance to do the examples :/ Won't have any quantum classes until my first block next september, so i was hoping to get some quick intro to it before starting it officially (and i'm currently reading Griffiths EM books of which i think is the best book i've had so far so i'm looking forward to reading it).
It depends on why Gasiorowicz is deficient... I really couldn't understand exactly what is missing from the book from the reviews. Anyways, Shankar has a very thorough introduction to the math needed in QM in its first 100 pages. While I haven't looked at Liboff, Griffiths is ok. It is slowly paced, but I think it jumps a bit and slightly fails to show how things are tied together. The notation Griffiths uses is very odd at times and might become confusing- pretty standard for beginning students though.
Good luck with QM (I have been taking at least one class in QM or QFT for the last 6 semesters, and I am taking another QFT class next semester. So I have seen a bit of the stuff.)
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