MATHEMATICAL LEFT DOUBLE ANGLE BRACKET·U+27EA

Character Information

Code Point
U+27EA
HEX
27EA
Unicode Plane
Basic Multilingual Plane
Category
Open Punctuation

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 9F AA
11100010 10011111 10101010
UTF16 (big Endian)
27 EA
00100111 11101010
UTF16 (little Endian)
EA 27
11101010 00100111
UTF32 (big Endian)
00 00 27 EA
00000000 00000000 00100111 11101010
UTF32 (little Endian)
EA 27 00 00
11101010 00100111 00000000 00000000
HTML Entity
⟪
URI Encoded
%E2%9F%AA

Description

U+27EA, or the MATHEMATICAL LEFT DOUBLE ANGLE BRACKET, is a Unicode character primarily used in digital text for representing double angle brackets in mathematical expressions and equations. It serves as an important tool for denoting certain mathematical concepts, such as derivations or integrals, where it signifies the boundary between two sections of a formula. While this character may not have a direct cultural, linguistic, or technical context outside of its specific usage in mathematics, it remains a valuable and essential symbol in various mathematical and scientific disciplines for precise communication and representation of complex concepts.

How to type the symbol on Windows

Hold Alt and type 10218 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+27EA. 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+27EA to binary: 00100111 11101010. 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 10101010