SUPERSET OF WITH NOT EQUAL TO·U+228B

Character Information

Code Point
U+228B
HEX
228B
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 8A 8B
11100010 10001010 10001011
UTF16 (big Endian)
22 8B
00100010 10001011
UTF16 (little Endian)
8B 22
10001011 00100010
UTF32 (big Endian)
00 00 22 8B
00000000 00000000 00100010 10001011
UTF32 (little Endian)
8B 22 00 00
10001011 00100010 00000000 00000000
HTML Entity
⊋
URI Encoded
%E2%8A%8B

Description

The Unicode character U+228B, known as the Superset of With Not Equal To symbol (⊆≠), is a mathematical symbol often utilized in digital text to represent a relationship between two sets. In this context, it denotes that one set (usually on the left) contains all elements of another set (typically on the right), but not necessarily vice versa, while also asserting that the two sets are not equal. This character is particularly useful in set theory and discrete mathematics for expressing these specific relations between sets. Although it may not be as commonly encountered as other mathematical symbols, the Superset of With Not Equal To symbol remains a valuable tool for mathematicians and computer scientists alike when precise set-based relationships need to be conveyed.

How to type the symbol on Windows

Hold Alt and type 8843 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+228B. 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+228B to binary: 00100010 10001011. 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 10001010 10001011