Step 1: Determine the UTF-8 encoding bit layout
The character ∓ has the Unicode code point U+2213. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800to0xffff.
Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format:1110xxxx 10xxxxxx 10xxxxxx
Where thexare the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+2213 to binary:
00100010 00010011. Those are the payload bits.Step 3: Fill in the bits to match the bit pattern:
Obtain the final bytes by arranging the paylod bits to match the bit layout:
11100010 10001000 10010011
MINUS-OR-PLUS SIGN·U+2213
∓
Character Information
Code Point
U+2213
HEX
2213
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 88 93 | 11100010 10001000 10010011 |
| UTF16 (big Endian) | 22 13 | 00100010 00010011 |
| UTF16 (little Endian) | 13 22 | 00010011 00100010 |
| UTF32 (big Endian) | 00 00 22 13 | 00000000 00000000 00100010 00010011 |
| UTF32 (little Endian) | 13 22 00 00 | 00010011 00100010 00000000 00000000 |
HTML Entity
∓
URI Encoded
%E2%88%93
Description
The Unicode character U+2213, known as the MINUS-OR-PLUS SIGN, plays a crucial role in mathematical equations and scientific notations within digital text. This versatile symbol is used to represent both subtraction (as a standard minus sign) and addition, depending on the context or preference of the author. Its dual functionality makes it an invaluable tool for mathematicians, engineers, and scientists who frequently switch between addition and subtraction operations in their work. The MINUS-OR-PLUS SIGN is part of the Mathematical Operators category within Unicode, which contains a comprehensive range of symbols used to denote various mathematical operations and relationships. Although its usage may vary across different cultures or languages, this character remains an essential component for accurate and clear communication in digital text that involves mathematical expressions.
How to type the ∓ symbol on Windows
Hold Alt and type 8723 on the numpad. Or use Character Map.