https://peterbloem.nl/blog/pca-3
Proving the spectral theorem | peterbloem.nl
spectral theoremprovingnl
https://www.impan.pl/en/publishing-house/journals-and-series/studia-mathematica/all/156/2/89860/a-spectral-mapping-theorem-for-banach-modules
A spectral mapping theorem for Banach modulesAll
Let $G$ be a locally compact abelian group, $M(G)$ the convolution measure algebra, and $X$ a Banach $M(G)$-module under the module multiplication $\mu \circ...
spectralmappingtheorembanach