TRIPLE INTEGRAL·U+222D

Character Information

Code Point
U+222D
HEX
222D
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 88 AD
11100010 10001000 10101101
UTF16 (big Endian)
22 2D
00100010 00101101
UTF16 (little Endian)
2D 22
00101101 00100010
UTF32 (big Endian)
00 00 22 2D
00000000 00000000 00100010 00101101
UTF32 (little Endian)
2D 22 00 00
00101101 00100010 00000000 00000000
HTML Entity
∭
URI Encoded
%E2%88%AD

Description

The Unicode character U+222D, also known as the Triple Integral sign (∩), holds significant importance in mathematical notation and digital text. This symbol is primarily utilized to represent the triple intersection of sets or events in set theory and logic. It serves a critical role in expressing complex mathematical concepts and theorems that involve multiple intersections, which are crucial for understanding and solving problems in various fields such as computer science, mathematics, and statistics. The Triple Integral sign is also employed in certain software applications and programming languages to denote specific operations or functions, demonstrating its versatility in digital communication.

How to type the symbol on Windows

Hold Alt and type 8749 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+222D. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    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 the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+222D to binary: 00100010 00101101. Those are the payload bits.

  3. 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 10101101