Concept information
Preferred term
self-adjoint operator
Definition
- In mathematics, a self-adjoint operator on an infinite-dimensional complex vector space V with inner product ⟨ ⋅ , ⋅ ⟩ (equivalently, a Hermitian operator in the finite-dimensional case) is a linear map A (from V to itself) that is its own adjoint. If V is finite-dimensional with a given orthonormal basis, this is equivalent to the condition that the matrix of A is a Hermitian matrix, i.e., equal to its conjugate transpose A∗. By the finite-dimensional spectral theorem, V has an orthonormal basis such that the matrix of A relative to this basis is a diagonal matrix with entries in the real numbers. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Self-adjoint_operator)
Broader concept
Entry terms
- Hermitian operator
In other languages
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French
-
endomorphisme autoadjoint
-
opérateur hermitien
URI
http://data.loterre.fr/ark:/67375/MDL-FTN4GJRV-G
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