commutator

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English[edit]

Noun[edit]

commutator (plural commutators)

  1. an electrical switch, in a generator or motor, that periodically reverses the direction of an electric current
  2. (mathematics) (of a group) an element of the form ghg−1h−1 where g and h are elements of the group; it is equal to the group's identity if and only if g and h commute
  3. (mathematics) (of a ring) an element of the form ab-ba, where a and b are elements of the ring, it is identical to the ring's zero element if and only if a and b commute
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Translations[edit]

Derived terms[edit]


Latin[edit]

Verb[edit]

commūtātor

  1. second-person singular future passive imperative of commūtō
  2. third-person singular future passive imperative of commūtō

References[edit]

  • commutator” in Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • commutator in Ramminger, Johann (accessed 16 July 2016) Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700[1], pre-publication website, 2005-2016