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词汇 commutative
释义

Definition of commutative in English:

commutative

adjective ˈkɒmjʊˌtətɪvkəˈmjuːtətɪv
  • 1Mathematics
    Involving the condition that a group of quantities connected by operators gives the same result whatever the order of the quantities involved, e.g. a × b = b × a.

    〔数〕交换的(如 a × b = b × a

    Example sentencesExamples
    • So, the addition and multiplication we are used to using are commutative.
    • In the density-independent case, this multiplication is commutative.
    • An operation is commutative if you can change the order of the numbers involved without changing the result.
    • In the 1840s, the Irish mathematician William Hamilton found that multiplication was not commutative in all number systems.
    • This is a consequence of large rotations not being commutative in three dimensions, so the averages are not accurate in regions of high variability.
  • 2rare Relating to or involving substitution or exchange.

    〈罕〉(一般)代替的;交换的

    Example sentencesExamples
    • Of course, the relationship between painting and philosophy is not entirely commutative.
    • The second difficulty was more damaging and, to a degree, commutative with the first.

Origin

Mid 16th century (in the sense 'relating to transactions between people'): from French commutatif, -ive or medieval Latin commutativus, from commutat- 'exchanged', from the verb commutare (see commute).

Definition of commutative in US English:

commutative

adjective
Mathematics
  • 1Involving the condition that a group of quantities connected by operators gives the same result whatever the order of the quantities involved, e.g., a × b = b × a.

    〔数〕交换的(如 a × b = b × a

    Example sentencesExamples
    • In the density-independent case, this multiplication is commutative.
    • This is a consequence of large rotations not being commutative in three dimensions, so the averages are not accurate in regions of high variability.
    • An operation is commutative if you can change the order of the numbers involved without changing the result.
    • In the 1840s, the Irish mathematician William Hamilton found that multiplication was not commutative in all number systems.
    • So, the addition and multiplication we are used to using are commutative.
    1. 1.1rare Relating to or involving substitution or exchange.
      〈罕〉(一般)代替的;交换的
      Example sentencesExamples
      • Of course, the relationship between painting and philosophy is not entirely commutative.
      • The second difficulty was more damaging and, to a degree, commutative with the first.

Origin

Mid 16th century (in the sense ‘relating to transactions between people’): from French commutatif, -ive or medieval Latin commutativus, from commutat- ‘exchanged’, from the verb commutare (see commute).

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