Standard Lemma guide

coset

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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Pronunciation

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1

noun

Meaning 1

The set that results from applying a group's binary operation with a given fixed element of the group on each element of a given subgroup.

Definition source: English Wiktionary via Wiktextract

Topics: algebra, group-theory, mathematics, sciences

Examples

  • 1970 [Addison Wesley], Frederick W. Byron, Robert W. Fuller, Mathematics of Classical and Quantum Physics, Volumes 1-2, Dover, 1992, page 597, Theorem 10.5. The collection consisting of an invariant subgroup H and all its distinct cosets is itself a group, called the factor group of G, usually denoted by G/H. (Remember that the left and right cosets of an invariant subgroup are identical.) Multiplication of two cosets aH and bH is defined as the set of all distinct products z = xy, with x ∈ aH and y ∈ bH; the identity element of the factor group is the subgroup H itself.
  • 1982 [Stanley Thornes], Linda Bostock, Suzanne Chandler, C. Rourke, Further Pure Mathematics, Nelson Thornes, 2002 Reprint, page 614, In general, the coset in row x consists of all the elements xh as h runs through the various elements of H.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From co- + set; apparently first used 1910 by American mathematician George Abram Miller.

Across languages

Translations

7 source translations are retained for this English entry.

  • Estonian: kõrvalklass — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Finnish: sivuluokka — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Hungarian: mellékosztály — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Italian: classe laterale — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Polish: warstwa — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Portuguese: classe lateral — result of applying group operation with fixed element from the parent group on each element of a subgroup
  • Swedish: sidoklass — result of applying group operation with fixed element from the parent group on each element of a subgroup