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    English · JMdict
    mathematics noncommutative ring
  2. 2
    English · Wikipedia

    In mathematics, more specifically modern algebra and ring theory, a noncommutative ring is a ring whose multiplication is not commutative; that is, there exists a and b in R with a·b ≠ b·a. Note that many authors use the term noncommutative ring to refer to rings which are not necessarily commutative, and hence include commutative rings in their definition. Noncommutative algebra is the study of results applying to rings that are not required to be commutative; however, many important results in this area apply to commutative rings as special cases. Although some authors don't assume their rings have a multiplicative identity, in this article we make that assumption unless stated otherwise.

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Códice gramatical

Qué significan las etiquetas de color

Hiragana

ひらがな

El kana redondeado y fluido. El hiragana escribe palabras japonesas nativas, terminaciones gramaticales y todo lo que va sin kanji (o junto a él): es el primer silabario que se aprende. Cada carácter representa una sílaba.

Ejemplo

ねこ — gato