Step 1: Determine the UTF-8 encoding bit layout
The character ∬ has the Unicode code point U+222C. 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+222C to binary:
00100010 00101100. 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 10101100
DOUBLE INTEGRAL·U+222C
∬
Character Information
Code Point
U+222C
HEX
222C
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 88 AC | 11100010 10001000 10101100 |
| UTF16 (big Endian) | 22 2C | 00100010 00101100 |
| UTF16 (little Endian) | 2C 22 | 00101100 00100010 |
| UTF32 (big Endian) | 00 00 22 2C | 00000000 00000000 00100010 00101100 |
| UTF32 (little Endian) | 2C 22 00 00 | 00101100 00100010 00000000 00000000 |
HTML Entity
∬
URI Encoded
%E2%88%AC
Description
The Unicode character U+222C, also known as the Double Integral symbol, is a mathematical notation commonly used in digital text to represent a definite integral with two limits. Its typical usage is within the realm of calculus, particularly when expressing the concept of an area or a line under a curve between two points. The Double Integral symbol plays a significant role in multivariable calculus and integration problems involving functions of several variables. It is often employed in mathematical equations and formulas across various fields such as physics, engineering, and computer science. Despite not being culturally specific, the Double Integral symbol contributes to the precision and clarity of technical communication, making it an essential tool for professionals and scholars working with advanced mathematics.
How to type the ∬ symbol on Windows
Hold Alt and type 8748 on the numpad. Or use Character Map.