Injective hulls are not natural

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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
Citation
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.
Related projects:	Categorical methods of the theory of structures and computer science Mathematical structures of algebra and geometry