I am looking for either:
- An introductory text to $C^*$-algebras and operator theory accessible to someone with an early undergraduate understanding of abstract algebra and some functional analysis. There are quite a few books on this subject, but I am not sure where they fall on the 'graduate-level vs. undergraduate-level' spectrum.
Or:
- A roadmap of texts for someone with an undergraduate level understanding of abstract algebra and a light understanding of functional analysis to be able to dig into introductory graduate texts on $C^*$-algebras.
And any comments on what may be appropriate in my endeavor.