Character Information

Code Point
U+2239
HEX
2239
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 88 B9
11100010 10001000 10111001
UTF16 (big Endian)
22 39
00100010 00111001
UTF16 (little Endian)
39 22
00111001 00100010
UTF32 (big Endian)
00 00 22 39
00000000 00000000 00100010 00111001
UTF32 (little Endian)
39 22 00 00
00111001 00100010 00000000 00000000
HTML Entity
∹
URI Encoded
%E2%88%B9

Description

The Unicode character U+2239 is known as EXCESS. This symbol plays a significant role in the realm of mathematics, specifically in set theory. It is frequently utilized to denote the excess of an element within a given set or group. In mathematical expressions, it often appears when describing differences between two sets. For instance, if A and B are two distinct sets, then A\B would represent the elements that are in set A but not in set B. The EXCESS character is critical for accurate representation and comprehension of complex mathematical equations and systems. It helps avoid ambiguity and ensures clarity in the presentation of these concepts. In addition to mathematics, it may also be used in coding or programming languages where the concept of excess or difference between elements is crucial. However, its usage is relatively rare due to its specialized nature. The EXCESS character is an essential tool for those working in fields that require precision in mathematical and set-theoretic representations.

How to type the symbol on Windows

Hold Alt and type 8761 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+2239. 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+2239 to binary: 00100010 00111001. 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 10111001