I'm looking for beginner books of spectral theory for finite dimensional spaces. I've already heard about this subject, but I don't know where I can find it. What's the domain of this subject? (Linear algebra or functional analysis maybe?)
Another question: Spectral theory for finite dimensional spaces is just the spectral theorem? For example if I study the chapter 13 of this book, I know spectral theory for finite dimensional spaces?
I need help
Thanks