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  <description>圏論 Conceptual Mathematics: A First Introduction to Categories 作者:Lawvere, F. William Cambridge University Press Amazon 抽象数学の手ざわり: ピタゴラスの定理から圏論まで みんなの圏論</description>
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  <published>2022-11-20 08:58:29</published>
  <title>圏論</title>
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