History

Time	Change
2016-07-26 08:12:43+00:00	Created
2016-07-26 08:12:43+00:00	Associated with 空集合 (ISO/IEC 2022)
2016-07-26 08:12:43+00:00	Associated with 空集合
2016-07-26 08:12:43+00:00	Associated with EMPTY SET
2016-07-26 08:12:43+00:00	Associated with empty set
2022-05-13 07:43:39+00:00	Associated with 7/14
2022-05-13 07:43:39+00:00	Associated with ~
2022-05-13 07:43:39+00:00	Associated with 7E
2022-05-13 07:43:43+00:00	Associated with 0x7E