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Publicado en línea: 27 dic 2013
Páginas: 235 - 239
Recibido: 08 dic 2013
DOI: https://doi.org/10.2478/forma-2013-0025
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© by Maciej Golinski
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 License. (CC BY-SA 3.0)
The paper introduces coproducts in categories without uniqueness of cod and dom. It is proven that set-theoretical disjoint union is the coproduct in the category Ens [9].