SQUARE LEFT OPEN BOX OPERATOR·U+2ACD

Character Information

Code Point
U+2ACD
HEX
2ACD
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 AB 8D
11100010 10101011 10001101
UTF16 (big Endian)
2A CD
00101010 11001101
UTF16 (little Endian)
CD 2A
11001101 00101010
UTF32 (big Endian)
00 00 2A CD
00000000 00000000 00101010 11001101
UTF32 (little Endian)
CD 2A 00 00
11001101 00101010 00000000 00000000
HTML Entity
⫍
URI Encoded
%E2%AB%8D

Description

The Unicode character U+2ACD, known as the Square Left Open Box Operator, is a typographical symbol used primarily in mathematical expressions and digital text for representing specific operations or structures. In digital texts and mathematical notation, this character typically serves as an operator within a square root function. It is often employed alongside numeric values to indicate the square root of a number. For instance, when followed by a digit or expression enclosed in parentheses, it signifies the square root of that value, such as "√(16)". The Square Left Open Box Operator holds no direct cultural, linguistic, or technical significance beyond its role within mathematical expressions and digital text representations. Its use is essential for accurate and clear communication of mathematical concepts, particularly in the fields of science, technology, engineering, and mathematics (STEM).

How to type the symbol on Windows

Hold Alt and type 10957 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+2ACD. 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+2ACD to binary: 00101010 11001101. 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 10101011 10001101