REVERSE SOLIDUS PRECEDING SUBSET·U+27C8

Character Information

Code Point
U+27C8
HEX
27C8
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 9F 88
11100010 10011111 10001000
UTF16 (big Endian)
27 C8
00100111 11001000
UTF16 (little Endian)
C8 27
11001000 00100111
UTF32 (big Endian)
00 00 27 C8
00000000 00000000 00100111 11001000
UTF32 (little Endian)
C8 27 00 00
11001000 00100111 00000000 00000000
HTML Entity
⟈
URI Encoded
%E2%9F%88

Description

The Unicode character U+27C8, known as the Reverse Solidus Preceding Subset, is a typographical symbol that plays a crucial role in digital text formatting. This character is often used in mathematical expressions to denote the subset relationship between two sets. In a mathematical context, it is typically placed between two sets to indicate that the first set is a proper subset of the second one. For example, if A and B are two sets, writing "A ⊆ B" would imply that all elements of A are also in B, although not necessarily vice versa. This symbol is particularly useful in computer science, mathematics, and other disciplines where set theory is widely employed. While the character is not commonly used in everyday language or text, it serves a vital purpose in precise and accurate communication within its specific fields.

How to type the symbol on Windows

Hold Alt and type 10184 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+27C8. 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+27C8 to binary: 00100111 11001000. 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 10011111 10001000