pseudospectrum

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noun

A set containing the spectrum of an operator and the numbers that are "almost" eigenvalues.

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Meanings

nounpseudospectrum (plural pseudospectra)

plural pseudospectra

  1. mathematicsA set containing the spectrum of an operator and the numbers that are "almost" eigenvalues.

Origin

From pseudo- + spectrum.

Full word history & related roots →
Cite this entry
APA

pseudospectrum. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/pseudospectrum

MLA

“pseudospectrum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pseudospectrum. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “pseudospectrum,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/pseudospectrum.

Source: pseudospectrum on Wiktionary, CC BY-SA 4.0.