U+00B1 Plus-Minus Sign
U+00B1 was added in Unicode version 1.1 in 1993. It belongs to the block Latin-1 Supplement 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 biquintile (astrological aspect: 144°).
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 is written as end of a European number, e.g., a currency symbol, from left to right. When changing direction it is not mirrored. U+00B1 prohibits a line break after it, if it is followed by a number.
The CLDR project calls this character “plus-minus” for use in screen reading software.
The Wikipedia has the following information about this codepoint:
The plus–minus sign, ±, is a symbol with multiple meanings:
- In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.
- In statistics and experimental sciences, the sign commonly indicates the confidence interval or uncertainty bounding a range of possible errors in a measurement, often the standard deviation or standard error. The sign may also represent an inclusive range of values that a reading might have.
- In chess, the sign indicates a clear advantage for the white player; the complementary minus-plus sign, ∓, indicates the same advantage for the black player.
Other meanings occur in other fields, including medicine, engineering, chemistry, electronics, linguistics, and philosophy.
Representations
| System | Representation |
|---|---|
| Nº | 177 |
| UTF-8 | C2 B1 |
| UTF-16 | 00 B1 |
| UTF-32 | 00 00 00 B1 |
| URL-Quoted | %C2%B1 |
| HTML hex reference | ± |
| Wrong windows-1252 Mojibake | ± |
| HTML named entity | ± |
| HTML named entity | ± |
| HTML named entity | ± |
| HTML named entity | ± |
| alias | biquintile (astrological aspect: 144°) |
| Encoding: EUC-KR (hex bytes) | A1 BE |
| Encoding: ISO-8859-13 (hex bytes) | B1 |
| Encoding: ISO-8859-15 (hex bytes) | B1 |
| Encoding: ISO-8859-16 (hex bytes) | B1 |
| Encoding: ISO-8859-7 (hex bytes) | B1 |
| Encoding: ISO-8859-8 (hex bytes) | B1 |
| Encoding: JIS0208 (hex bytes) | A1 DE |
| Encoding: MACINTOSH (hex bytes) | B1 |
| Encoding: WINDOWS-1250 (hex bytes) | B1 |
| Encoding: WINDOWS-1251 (hex bytes) | B1 |
| Encoding: WINDOWS-1252 (hex bytes) | B1 |
| Encoding: WINDOWS-1253 (hex bytes) | B1 |
| Encoding: WINDOWS-1254 (hex bytes) | B1 |
| Encoding: WINDOWS-1255 (hex bytes) | B1 |
| Encoding: WINDOWS-1256 (hex bytes) | B1 |
| Encoding: WINDOWS-1257 (hex bytes) | B1 |
| Encoding: WINDOWS-1258 (hex bytes) | B1 |
| Encoding: X-MAC-CYRILLIC (hex bytes) | B1 |
| LATEX | \pm |
| AGL: Latin-1 | plusminus |
| AGL: Latin-2 | plusminus |
| AGL: Latin-3 | plusminus |
| AGL: Latin-4 | plusminus |
| AGL: Latin-5 | plusminus |
| Adobe Glyph List | plusminus |
| digraph | +- |
Elsewhere
Complete Record
| Property | Value |
|---|---|
| 1.1 (1993) | |
| PLUS-MINUS SIGN | |
| PLUS-OR-MINUS SIGN | |
| Latin-1 Supplement | |
| Math Symbol | |
| Common | |
| European Terminator | |
| Not Reordered | |
| none | |
| Plus-Minus Sign | |
| ✘ | |
| Plus-Minus Sign | |
| Plus-Minus Sign | |
| ✘ | |
| Plus-Minus Sign | |
| Plus-Minus Sign | |
| Plus-Minus Sign | |
| Plus-Minus Sign | |
| Plus-Minus Sign | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Plus-Minus Sign | |
| Any | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| 0 | |
| 0 | |
| 0 | |
| ✘ | |
| None | |
| — | |
| NA | |
| Other | |
| — | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| Yes | |
| Yes | |
| Plus-Minus Sign | |
| Yes | |
| Plus-Minus Sign | |
| Yes | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Plus-Minus Sign | |
| None | |
| ambiguous | |
| Not Applicable | |
| — | |
| No_Joining_Group | |
| Non Joining | |
| Prefix Numeric | |
| none | |
| not a number | |
| Plus-Minus Sign | |
| U |