spectral sets

A form of spectral set — In operator theory, a set X⊆ℂ such that, for a (possibly unbounded) linear operator T on a Banach space, the spectrum of T is in X and von Neumann's inequality holds for T on X.

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Meanings

noun
  1. pluralplural of spectral set
Cite this entry
APA

spectral sets. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/spectral%20sets

MLA

“spectral sets.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/spectral%20sets. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “spectral sets,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/spectral%20sets.

Source: spectral sets on Wiktionary, CC BY-SA 4.0.