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Math Help - example of a category

  1. #1
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    Talking example of a category

    Could anyone give an example of an additive category which is not abelian?
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  2. #2
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    Quote Originally Posted by Veve View Post
    Could anyone give an example of an additive category which is not abelian?
    matrices
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  3. #3
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    Thank you.
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  4. #4
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    Quote Originally Posted by pickslides View Post

    matrices
    the question is about non-abelian "categories" not non-commutative "rings".
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