View details and encodings for Unicode character U+29B1 Empty Set With Overbar, located in the Miscellaneous Mathematical Symbols-B block and Math Symbol category. This character was released in 2002 under Unicode version 3.2.
⦱⦱⦱U+29B1;10673\0029B1\u29B1\x{29B1}\u{29B1}u'\u29B1'