@MISC{ALTCAT_6.MIZ,
  AUTHOR = {Goli\'nski, Maciej and Korni{\l}owicz, Artur},
  TITLE = {Coproducts in Categories without Uniqueness of { \bf cod } and { \bf dom }},
  DAY = {8},
  MONTH = {December},
  YEAR = {2013},
  ADDRESS1 = {Institute of Informatics\\University of Bia{\l}ystok\\Sosnowa 64, 15-887 Bia{\l}ystok\\Poland},
  ADDRESS2 = {Institute of Informatics\\University of Bia{\l}ystok\\Sosnowa 64, 15-887 Bia{\l}ystok\\Poland},
  SUMMARY = {The paper introduces coproducts
  in categories without uniqueness of { \bf cod } and { \bf dom }.
  It is proven that set-theoretical disjoint union
  is the coproduct in the category Ens \cite{SEMAD}.}}
