Step 1: Determine the UTF-8 encoding bit layout
The character ⅅ has the Unicode code point U+2145. 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+2145 to binary:
00100001 01000101. 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 10000101 10000101
DOUBLE-STRUCK ITALIC CAPITAL D·U+2145
ⅅ
Character Information
Code Point
U+2145
HEX
2145
Unicode Plane
Basic Multilingual Plane
Category
Uppercase Letter
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 85 85 | 11100010 10000101 10000101 |
| UTF16 (big Endian) | 21 45 | 00100001 01000101 |
| UTF16 (little Endian) | 45 21 | 01000101 00100001 |
| UTF32 (big Endian) | 00 00 21 45 | 00000000 00000000 00100001 01000101 |
| UTF32 (little Endian) | 45 21 00 00 | 01000101 00100001 00000000 00000000 |
HTML Entity
ⅅ
URI Encoded
%E2%85%85
Description
The Unicode character U+2145, known as the DOUBLE-STRUCK ITALIC CAPITAL D, is a typographic symbol with specific roles in digital text. It is often used in mathematical expressions or scientific notations to denote the letter "D" in a double-struck and italicized format. This character is useful for creating clear distinctions between variables, constants, or other elements within equations or technical documents. The DOUBLE-STRUCK ITALIC CAPITAL D is significant in its ability to differentiate from the standard capital "D" (U+0044) and the double-struck upright capital "D" (U+2143). This distinction allows for enhanced readability and clarity in various mathematical or scientific contexts.
How to type the ⅅ symbol on Windows
Hold Alt and type 8517 on the numpad. Or use Character Map.