commutator
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commutator
Where it comes from
Back-formation from commutation (in the late 19th century), as is commutate (verb) too.
noun commutators
-
An electrical switch, in a generator or motor, that periodically reverses the direction of an electric current.
Similar: rheotrope, electrepeter
- A binary map in a given group G, given by [g, h] = ghg⁻¹h⁻¹, where g and h are elements of G, which yields the group's identity if and only if the group operation commutes for g and h.
- A binary map in a given ring R, given by [a, b] = ab − ba, where a and b are elements of R, which yields the ring's zero element if and only if the multiplication operation commutes for a and b.
Translations
Every language
noun binary function in a ring
| 日本語 | 交換子 kōkanshi |
|---|---|
| Deutsch | Kommutator |
noun electrical switch
| 日本語 | 整流子 seiryūshi |
|---|---|
| Română | colector de comutație, colector |
Talk about this word "commutator." Wiktionary, via Micwyn, micwyn.com/word/commutator. Accessed 6 Nov. 2026. commutator. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/commutator "commutator." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/commutator.Cite this
@misc{commutator_2026,
title = {commutator},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/commutator},
urldate = {2026-11-06}
}
