RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE·U+21FB

Character Information

Code Point
U+21FB
HEX
21FB
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 87 BB
11100010 10000111 10111011
UTF16 (big Endian)
21 FB
00100001 11111011
UTF16 (little Endian)
FB 21
11111011 00100001
UTF32 (big Endian)
00 00 21 FB
00000000 00000000 00100001 11111011
UTF32 (little Endian)
FB 21 00 00
11111011 00100001 00000000 00000000
HTML Entity
⇻
URI Encoded
%E2%87%BB

Description

The Unicode character U+21FB, known as the RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE, is a symbol used in digital text to represent an arrow pointing rightwards with two vertical lines bisecting it. This typographic element serves a critical role in mathematical equations and scientific notation, where it denotes an operation or function, often relating to vector spaces or transformations. It is also employed in computer graphics and programming, specifically in data flow diagrams and algorithms that require visual representation of rightward movement with emphasis on directionality. Although this character might appear niche or technical, its versatile application across various fields, such as physics, engineering, and computer science, underscores its significance in modern digital communication.

How to type the symbol on Windows

Hold Alt and type 8699 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+21FB. 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+21FB to binary: 00100001 11111011. 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 10000111 10111011