Character Information

Code Point
U+29B0
HEX
29B0
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 A6 B0
11100010 10100110 10110000
UTF16 (big Endian)
29 B0
00101001 10110000
UTF16 (little Endian)
B0 29
10110000 00101001
UTF32 (big Endian)
00 00 29 B0
00000000 00000000 00101001 10110000
UTF32 (little Endian)
B0 29 00 00
10110000 00101001 00000000 00000000
HTML Entity
⦰
URI Encoded
%E2%A6%B0

Description

The Unicode character U+29B0, known as the Reversed Empty Set, holds a unique position in the world of typography and digital text. It is not meant for representing any specific symbol or character, but instead serves a functional purpose in mathematical expressions. In its typical usage, the Reversed Empty Set character is used to denote a set that contains no elements. This can be particularly useful when expressing a concept such as an empty or null set in various mathematical fields like set theory and computer science. While it may not hold any particular cultural significance, the Reversed Empty Set symbol (U+29B0) is an essential tool for accurate digital text representation within these disciplines.

How to type the symbol on Windows

Hold Alt and type 10672 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+29B0. 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+29B0 to binary: 00101001 10110000. 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 10100110 10110000