Step 1: Determine the UTF-8 encoding bit layout
The character ∸ has the Unicode code point U+2238. 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+2238 to binary:
00100010 00111000. 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 10111000
DOT MINUS·U+2238
∸
Character Information
Code Point
U+2238
HEX
2238
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 88 B8 | 11100010 10001000 10111000 |
| UTF16 (big Endian) | 22 38 | 00100010 00111000 |
| UTF16 (little Endian) | 38 22 | 00111000 00100010 |
| UTF32 (big Endian) | 00 00 22 38 | 00000000 00000000 00100010 00111000 |
| UTF32 (little Endian) | 38 22 00 00 | 00111000 00100010 00000000 00000000 |
HTML Entity
∸
URI Encoded
%E2%88%B8
Description
The Unicode character U+2238, known as the DOT MINUS, is a lesser-known symbol primarily used in mathematical expressions to represent a binary operation called "dot minus." This character is not commonly encountered in everyday digital text, but it plays a significant role in specific technical contexts, particularly within mathematical and computer science communities. In its typical usage, the DOT MINUS is employed to denote the subtraction of two binary numbers in a concise and clear manner. For instance, it can be used to represent the binary subtraction operation between two numbers, similar to how a hyphen or minus sign would indicate subtraction in decimal notation. Despite its niche application, the DOT MINUS remains an essential symbol for those who need to work with binary operations and mathematical expressions involving powers of 2.
How to type the ∸ symbol on Windows
Hold Alt and type 8760 on the numpad. Or use Character Map.