eigenfunction

Noun

Meaning

eigenfunction (plural eigenfunctions)

(mathematics) A function



ϕ


{\displaystyle \phi }

such that, for a given linear operator



D


{\displaystyle D}

,



D
ϕ
=
λ
ϕ


{\displaystyle D\phi =\lambda \phi }

for some scalar



λ


{\displaystyle \lambda }

(called an eigenvalue).

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