代數 (代數)

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Template:當代數學 代數,亦曰域代數,有矢量乘法之線性空間也。然代數者,可指矢量乘法合結合律者,即結合代數也。

定義

代數者,矢量空間也,有一矢量乘法,且:

  • 矢量和,矢量乘,合分配律也。(「𝐱(𝐲+𝐳)=𝐱𝐲+𝐱𝐳;(𝐱+𝐲)𝐳=𝐱𝐳+𝐲𝐳」)
  • 凡二數甲(a)乙(b)與矢量丙(𝐱)丁(𝐲),皆有甲丙積乘乙丁積,同乎甲乙積乘丙丁積也(「(a𝐱)(b𝐲)=(ab)(𝐱𝐲)。」)

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分類:代數