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About:Projective cover

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In the branch of abstract mathematics called category theory, a projective cover of an object X is in a sense the best approximation of X by a projective object P. Projective covers are the dual of injective envelopes.

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  • In the branch of abstract mathematics called category theory, a projective cover of an object X is in a sense the best approximation of X by a projective object P. Projective covers are the dual of injective envelopes. (en)
  • 数学において、射影被覆（しゃえいひふく、英: projective cover）とは、射影加群 P と加群 M へ全射準同型写像 P → M の組のうちで、核が‘最小’になるもののことをいう（）。 (ja)
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  • In the branch of abstract mathematics called category theory, a projective cover of an object X is in a sense the best approximation of X by a projective object P. Projective covers are the dual of injective envelopes. (en)
  • 数学において、射影被覆（しゃえいひふく、英: projective cover）とは、射影加群 P と加群 M へ全射準同型写像 P → M の組のうちで、核が‘最小’になるもののことをいう（）。 (ja)
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  • 射影被覆 (ja)
  • Projective cover (en)
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