Icelandic

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Etymology

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From hálf- (half-) +‎ grúpa (group).

Noun

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hálfgrúpa f (genitive singular hálfgrúpu, nominative plural hálfgrúpur)

  1. (mathematics) a semigroup; (any set for which there is a binary operation that is both closed and associative)

Declension

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    Declension of hálfgrúpa
f-w1 singular plural
indefinite definite indefinite definite
nominative hálfgrúpa hálfgrúpan hálfgrúpur hálfgrúpurnar
accusative hálfgrúpu hálfgrúpuna hálfgrúpur hálfgrúpurnar
dative hálfgrúpu hálfgrúpunni hálfgrúpum hálfgrúpunum
genitive hálfgrúpu hálfgrúpunnar hálfgrúpa hálfgrúpanna

Derived terms

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