Definizione monolingua

commutator

comm?t?tor

1. second-person singular future passive imperative of comm?t?
2. third-person singular future passive imperative of comm?t?

Wikipedia 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 groups 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 rings zero element if and only if a and b commute

Definizione dizionario commutator

commutatore

motore in corrente continua#motore a spazzole

Altri significati:

(mathematics) ( '''of a group''' ) an element of the form <i>ghg<sup>?1</sup>h<sup>?1</sup></i> 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

an electrical switch, in a generator or motor, that periodically reverses the direction of an electric current

(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

electrical switch