Helly dimension

noun

A value associated with a metric space, being one less than the Helly number of the family of metric balls in that space.

“Helly's theorem implies that the Helly dimension of a Euclidean space equals its dimension as a real vector space.”

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Meanings

nounHelly dimension (plural Helly dimensions)

plural Helly dimensions

  1. combinatoricsA value associated with a metric space, being one less than the Helly number of the family of metric balls in that space.

    Helly's theorem implies that the Helly dimension of a Euclidean space equals its dimension as a real vector space.

Origin

Named after Eduard Helly.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

Source: Helly dimension on Wiktionary, CC BY-SA 4.0.