空集合 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "空集合" in Japanese language version.

refsWebsite

Global rank Japanese rank

934^th place

57^th place

549^th place

1,878^th place

google.co.jp

books.google.co.jp

Bourbaki 2004, p. 91.
Bourbaki 2004, p. 92.

tripod.com

jeff560.tripod.com

Earliest Uses of Symbols of Set Theory and Logic の2014-02-07版（2015-12-23閲覧）