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Oct 9, 2013 at 23:58 vote accept Gerry Myerson
Sep 30, 2013 at 20:03 comment added Moritz Firsching Yes, I guess this was sometimes around 1923/24, in some French and German papers.
Sep 30, 2013 at 18:10 comment added Włodzimierz Holsztyński Lets add that it was Alexandrov and Urysohn who introduced (invented) the general modern notion of compactness (called by them bi-compactness).
Sep 30, 2013 at 10:54 history answered Moritz Firsching CC BY-SA 3.0