Toda bracket

noun

A certain operation on homotopy classes of maps, in particular on homotopy groups of spheres.

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Meanings

nounToda bracket (plural Toda brackets)

plural Toda brackets

  1. mathematicsA certain operation on homotopy classes of maps, in particular on homotopy groups of spheres.

Origin

Introduced by Hiroshi Toda in 1962.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

Source: Toda bracket on Wiktionary, CC BY-SA 4.0.