von Neumann's inequality

proper noun

In operator theory, the statement that, for a fixed contraction T, the polynomial functional calculus map is itself a contraction.

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Meanings

proper noun
  1. mathematicsIn operator theory, the statement that, for a fixed contraction T, the polynomial functional calculus map is itself a contraction.

Origin

Due to John von Neumann.

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Cite this entry
APA

von Neumann's inequality. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/von%20Neumann's%20inequality

MLA

“von Neumann's inequality.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/von%20Neumann's%20inequality. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “von Neumann's inequality,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/von%20Neumann's%20inequality.

Source: von Neumann's inequality on Wiktionary, CC BY-SA 4.0.