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The module is injective iff it is a direct summand of an injective cogenerator

  1. Jun 7, 2008 #1
    could any one give me a proof of this statment:

    The module is injective iff it is a direct summand of an injective cogenerator.
     
  2. jcsd
  3. Jun 7, 2008 #2

    mathwonk

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    no, but for such things, see abelian categories by peter freyd.
     
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