U+2288 Neither A Subset of Nor Equal To
U+2288 was added in Unicode version 1.1 in 1993. It belongs to the block Mathematical Operators in the Basic Multilingual Plane.
This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is a canonical composition of the glyphs Subset of Or Equal To, Combining Long Solidus Overlay. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored into Neither A Superset of Nor Equal To. The word that U+2288 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In mathematics, a set A is a subset of a set B if all elements of A are also elements of B; B is then a superset of A. It is possible for A and B to be equal; if they are unequal, then A is a proper subset of B. The relationship of one set being a subset of another is called inclusion (or sometimes containment). A is a subset of B may also be expressed as B includes (or contains) A or A is included (or contained) in B. A k-subset is a subset with k elements.
The subset relation defines a partial order on sets. In fact, the subsets of a given set form a Boolean algebra under the subset relation, in which the join and meet are given by intersection and union, and the subset relation itself is the Boolean inclusion relation.
Representations
| System | Representation |
|---|---|
| Nº | 8840 |
| UTF-8 | E2 8A 88 |
| UTF-16 | 22 88 |
| UTF-32 | 00 00 22 88 |
| URL-Quoted | %E2%8A%88 |
| HTML hex reference | ⊈ |
| Wrong windows-1252 Mojibake | ⊈ |
| HTML named entity | ⊈ |
| HTML named entity | ⊈ |
| HTML named entity | ⊈ |
| LATEX | \not\subseteq |
Related Characters
Elsewhere
Complete Record
| Property | Value |
|---|---|
| 1.1 (1993) | |
| NEITHER A SUBSET OF NOR EQUAL TO | |
| — | |
| Mathematical Operators | |
| Math Symbol | |
| Common | |
| Other Neutral | |
| Not Reordered | |
| canonical | |
| Subset of Or Equal To Combining Long Solidus Overlay | |
| ✘ | |
| Neither A Subset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| ✘ | |
| Neither A Subset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Neither A Subset of Nor Equal To | |
| Any | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| 0 | |
| 0 | |
| 0 | |
| ✘ | |
| None | |
| — | |
| NA | |
| Other | |
| — | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| Yes | |
| No | |
| Neither A Subset of Nor Equal To | |
| Yes | |
| Neither A Subset of Nor Equal To | |
| No | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✔ | |
| Neither A Superset of Nor Equal To | |
| Neither A Subset of Nor Equal To | |
| None | |
| neutral | |
| Not Applicable | |
| — | |
| No_Joining_Group | |
| Non Joining | |
| Alphabetic | |
| none | |
| not a number | |
| Neither A Subset of Nor Equal To | |
| R |