GREEK LETTER SMALL CAPITAL PSI·U+1D2A

Character Information

Code Point
U+1D2A
HEX
1D2A
Unicode Plane
Basic Multilingual Plane
Category
Lowercase Letter

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E1 B4 AA
11100001 10110100 10101010
UTF16 (big Endian)
1D 2A
00011101 00101010
UTF16 (little Endian)
2A 1D
00101010 00011101
UTF32 (big Endian)
00 00 1D 2A
00000000 00000000 00011101 00101010
UTF32 (little Endian)
2A 1D 00 00
00101010 00011101 00000000 00000000
HTML Entity
ᴪ
URI Encoded
%E1%B4%AA

Description

The Unicode character U+1D2A represents the Greek letter small capital Psi (Ψ ψ), which is used in both mathematical notation and typography. In digital text, it serves as a symbol for various concepts, including psychology, psychoanalysis, and psychology-related terms like psychophysics, psychoacoustics, and psychoactive substances. The Greek letter Psi is significant in ancient cultures, where it was used to represent the god of dreams and the unconscious mind in mythology. It also holds importance in mathematics and computer science as an encoding character for data streams, particularly in the realm of information theory. The usage of U+1D2A in digital text is widespread due to its versatility, enabling accurate representation of various disciplines and concepts within a single character set.

How to type the symbol on Windows

Hold Alt and type 7466 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+1D2A. 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+1D2A to binary: 00011101 00101010. 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:
    11100001 10110100 10101010