U+29B0 Reversed Empty Set
U+29B0 was added to Unicode in version 3.2 (2002). It belongs to the block Miscellaneous Mathematical Symbols-B in the Basic Multilingual Plane.
This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. The glyph can, under circumstances, be confused with 1 other glyphs. In text U+29B0 behaves as Alphabetic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.
The Wikipedia has the following information about this codepoint:
In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set.
Any set other than the empty set is called non-empty.
In some textbooks and popularizations, the empty set is referred to as the "null set". However, null set is a distinct notion within the context of measure theory, in which it describes a set of measure zero (which is not necessarily empty). The empty set may also be called the void set.
Representations
| System | Representation |
|---|---|
| Nº | 10672 |
| UTF-8 | E2 A6 B0 |
| UTF-16 | 29 B0 |
| UTF-32 | 00 00 29 B0 |
| URL-Quoted | %E2%A6%B0 |
| HTML hex reference | ⦰ |
| Wrong windows-1252 Mojibake | ⦰ |
| HTML named entity | ⦰ |
Related Characters
Confusables
Elsewhere
Complete Record
| Property | Value |
|---|---|
| 3.2 (2002) | |
| REVERSED EMPTY SET | |
| — | |
| Miscellaneous Symbols | |
| Math Symbol | |
| Common | |
| Other Neutral | |
| Not Reordered | |
| None | |
| Reversed Empty Set | |
| ✘ | |
| Reversed Empty Set | |
| Reversed Empty Set | |
| ✘ | |
| Reversed Empty Set | |
| Reversed Empty Set | |
| Reversed Empty Set | |
| Reversed Empty Set | |
| Reversed Empty Set | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Reversed Empty Set | |
| Any | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| — | |
| NA | |
| Other | |
| — | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| Yes | |
| Yes | |
| Reversed Empty Set | |
| Yes | |
| Yes | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Reversed Empty Set | |
| None | |
| Neutral | |
| Not Applicable | |
| — | |
| No_Joining_Group | |
| Non Joining | |
| Alphabetic | |
| None | |
| not a number | |
| Reversed Empty Set | |
| R |