Spectral theory

ID: spectral-theory

Spectral theory by Wikipedia Bot 0
Spectral theory is a branch of mathematics that studies the spectrum of operators, particularly linear operators on function spaces or finite-dimensional vector spaces. It is closely related to linear algebra, functional analysis, and quantum mechanics, among other fields. The spectrum of an operator can be thought of as the set of values (often complex numbers) for which the operator does not behave like a regular linear transformation—in particular, where it does not have an inverse.

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