Concept information
Preferred term
Bessel's inequality
Definition
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In mathematics, especially functional analysis, Bessel's inequality is a statement about the coefficients of an element x in a Hilbert space with respect to an orthonormal sequence. The inequality was derived by F.W. Bessel in 1828.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Bessel%27s_inequality)
Broader concept
In other languages
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French
URI
http://data.loterre.fr/ark:/67375/PSR-TRJ3KP7F-H
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