U+25B7 White Right-Pointing Triangle
U+25B7 was added in Unicode version 1.1 in 1993. It belongs to the block Geometric Shapes in the Basic Multilingual Plane.
This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as z notation range restriction.
The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. If its East Asian Width is “narrow”, U+25B7 forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts. The glyph can be confused with one other glyph.
The CLDR project calls this character “hollow right-pointing triangle” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: hollow, right-pointing, triangle.
The Wikipedia has the following information about this codepoint:
In database theory, relational algebra is a theory that uses algebraic structures for modeling data and defining queries on it with well founded semantics. The theory was introduced by Edgar F. Codd.
The main application of relational algebra is to provide a theoretical foundation for relational databases, particularly query languages for such databases, chief among which is SQL. Relational databases store tabular data represented as relations. Queries over relational databases often likewise return tabular data represented as relations.
The main purpose of relational algebra is to define operators that transform one or more input relations to an output relation. Given that these operators accept relations as input and produce relations as output, they can be combined and used to express complex queries that transform multiple input relations (whose data are stored in the database) into a single output relation (the query results).
Unary operators accept a single relation as input. Examples include operators to filter certain attributes (columns) or tuples (rows) from an input relation. Binary operators accept two relations as input and combine them into a single output relation. For example, taking all tuples found in either relation (union), removing tuples from the first relation found in the second relation (difference), extending the tuples of the first relation with tuples in the second relation matching certain conditions, and so forth.
Other more advanced operators can also be included, where the inclusion or exclusion of certain operators gives rise to a family of algebras.
Representations
| System | Representation |
|---|---|
| Nº | 9655 |
| UTF-8 | E2 96 B7 |
| UTF-16 | 25 B7 |
| UTF-32 | 00 00 25 B7 |
| URL-Quoted | %E2%96%B7 |
| HTML hex reference | ▷ |
| Wrong windows-1252 Mojibake | â–· |
| alias | z notation range restriction |
| Encoding: CP949 (hex bytes) | A2 B9 |
| Encoding: EUC_JIS_2004 (hex bytes) | A3 A1 |
| Encoding: EUC_JISX0213 (hex bytes) | A3 A1 |
| Encoding: EUC_KR (hex bytes) | A2 B9 |
| Encoding: GB18030 (hex bytes) | 81 37 9C 35 |
| Encoding: ISO2022_JP_2 (hex bytes) | 1B 24 28 43 22 39 1B 28 42 |
| Encoding: ISO2022_JP_2004 (hex bytes) | 1B 24 28 51 23 21 1B 28 42 |
| Encoding: ISO2022_JP_3 (hex bytes) | 1B 24 28 4F 23 21 1B 28 42 |
| Encoding: ISO2022_KR (hex bytes) | 1B 24 29 43 0E 22 39 0F |
| Encoding: JOHAB (hex bytes) | D9 B9 |
| Encoding: SHIFT_JIS_2004 (hex bytes) | 82 40 |
| Encoding: SHIFT_JISX0213 (hex bytes) | 82 40 |
| AGL: Latin-4 | uni25B7 |
| AGL: Latin-5 | uni25B7 |
| Adobe Glyph List | whiterightpointingtriangle |
| digraph | Tr |
Related Characters
Confusables
Elsewhere
Complete Record
| Property | Value |
|---|---|
| 1.1 (1993) | |
| WHITE RIGHT-POINTING TRIANGLE | |
| WHITE RIGHT POINTING TRIANGLE | |
| Geometric Shapes | |
| Math Symbol | |
| Common | |
| Other Neutral | |
| Not Reordered | |
| none | |
| White Right-Pointing Triangle | |
| ✘ | |
| White Right-Pointing Triangle | |
| White Right-Pointing Triangle | |
| ✘ | |
| White Right-Pointing Triangle | |
| White Right-Pointing Triangle | |
| White Right-Pointing Triangle | |
| White Right-Pointing Triangle | |
| White Right-Pointing Triangle | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| White Right-Pointing Triangle | |
| Any | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| 0 | |
| 0 | |
| 0 | |
| ✘ | |
| None | |
| — | |
| NA | |
| Other | |
| — | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| Yes | |
| Yes | |
| White Right-Pointing Triangle | |
| Yes | |
| White Right-Pointing Triangle | |
| Yes | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| White Right-Pointing Triangle | |
| None | |
| ambiguous | |
| Not Applicable | |
| — | |
| No_Joining_Group | |
| Non Joining | |
| Ambiguous (Alphabetic or Ideographic) | |
| none | |
| not a number | |
| White Right-Pointing Triangle | |
| U |