Injective hulls are not natural

• Authors: ADÁMEK J.; HERRLICH H.; ROSICKÝ Jiří; THOLEN W.
• Year of publication: 2002
• Type: Article in Periodical
• Magazine / Source: Algebra Universalis
• MU Faculty or unit: Faculty of Science
• Field: General mathematics
• Keywords: injective object; injective hull
• Description: In a category with injective hulls and a cogenerator, the embeddings into injective hulls can never form a natural transformation, unless all objects are injective.

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