HEAVY CIRCLE WITH CIRCLE INSIDE·U+2B57

Character Information

Code Point
U+2B57
HEX
2B57
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 AD 97
11100010 10101101 10010111
UTF16 (big Endian)
2B 57
00101011 01010111
UTF16 (little Endian)
57 2B
01010111 00101011
UTF32 (big Endian)
00 00 2B 57
00000000 00000000 00101011 01010111
UTF32 (little Endian)
57 2B 00 00
01010111 00101011 00000000 00000000
HTML Entity
⭗
URI Encoded
%E2%AD%97

Description

U+2B57, the HEAVY CIRCLE WITH CIRCLE INSIDE character, is a typographical symbol that plays a significant role in digital text. This Unicode character represents a heavy circle with an inner circle, offering a visually distinctive way to illustrate two concentric circles. In digital contexts, it is often used in mathematics, computer science, and engineering to denote the inclusion of one circle within another or to represent the concept of enclosure. While it may not have any specific cultural significance, its usage can be found across various technical domains, where precise and clear communication is crucial. The HEAVY CIRCLE WITH CIRCLE INSIDE character aids in conveying complex ideas with clarity and accuracy, enabling readers to easily understand the relationships between different elements within a text. Its application transcends language barriers, making it an essential tool for effective digital communication.

How to type the symbol on Windows

Hold Alt and type 11095 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+2B57. 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+2B57 to binary: 00101011 01010111. 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 10101101 10010111