Wow. Great book. I just got through the first 3 chapters. A bunch of stuff which I already knew but didn't understand on an intuitive level has just fallen into place.
This is the same "Oh!" feeling I had about 8 years ago when I realised that all the different series representations of functions were simply different bases in the same Hilbert space.
This is the same "Oh!" feeling I had about 8 years ago when I realised that all the different series representations of functions were simply different bases in the same Hilbert space.

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