Talk:Isomorphism of categories

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I deleted the last example, concerning the isomorphism of the category of sets and partial functions, Part, with the category of pointed sets, Set_*, because it is false. To see this, consider the isomorphism class of the null set in Part, it contains only the null set. On the other hand, each isomorphism class of Set_* contains more then 1 element. --128.232.250.244 20:05, 28 October 2006 (UTC)