Empty set (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Empty set" in Simple English language version.

refsWebsite

Global rank Simple English rank

low place

19^th place

513^th place

25^th place

1,430^th place

120^th place

mathvault.ca

"Comprehensive List of Set Theory Symbols". Math Vault. 2020-04-11. Retrieved 2020-10-10.

thoughtco.com

Taylor, Courtney (March 23, 2018). "What Is the Empty Set in Set Theory?". ThoughtCo. Retrieved 2020-10-11.

wolfram.com

mathworld.wolfram.com

Weisstein, Eric W. "Empty Set". mathworld.wolfram.com. Retrieved 2020-10-10.