Function of a Matrix

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Categories and Sheaves by Masaki Kashiwara and Pierre Schapira (2)

On page 24, line 4, one reads

Hom_C(X,Y) \in U for all X,Y \in C, …

This is incorrect (I think).

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PS. This has already been pointed out by Joseph Oesterlé:

http://people.math.jussieu.fr/~schapira/books/Errata.ps