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Null object of a category. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Null_object_of_a_category&oldid=42590
Null object of a category. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Null_object_of_a_category&oldid=42590
This article was adapted from an original article by M.Sh. Tsalenko (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article