Functional analysis MOC

Spectrum

The spectrum 𝜎(𝑇) of a bounded or unbounded operator 𝑇 is the set of all 𝜆 ∈ℂ such that 𝑇 −𝜆𝐈 has no bounded and densely defined set-theoretic inverse. #m/def/anal/fun This is a generalization of eigenvalues.

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