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𝜜

mathematical bold italic capital alpha

Mathematical Bold Italic Capital Alpha

771/996

𝜜 is uppercase Greek alpha in a bold-italic mathematical style. In a formula it marks a distinct variable, while the surrounding definitions tell you what that variable means.

Text symbol

What 𝜜 means

It distinguishes a mathematical alpha from its plain form.

In mathematical notation, bold and italic letters can carry separate identities instead of acting as font decoration. Physics and engineering texts sometimes use bold symbols for vectors, but that convention does not give this alpha a fixed value; the author's definitions do.

By 1999, scientific and technical publishers already used styled Latin and Greek alphabets. The Unicode proposal from that year sought a complete set so plain text and web documents could preserve these distinctions. Unicode advises against using mathematical alphabets just to style ordinary prose.

Don't confuse it with

3

Questions people ask

1

Why does 𝜜 appear as a box?

Usually, the active font lacks this mathematical alphabet. Try a font with mathematical alphanumeric support; if it still fails, the app may not render the character.

How to type or find 𝜜

Search it as
vector · variable · formula · equation · notation
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 1D71C, then AltX to get 𝜜.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “mathematical bold italic capital alpha”.
Linux
⎈Ctrl+⇧Shift+UType 1d71c, then Enter or Space.
HTML
𝜜
CSS
\1D71C
Microsoft Word
Type 1D71C in Word, then press AltX. If letters immediately precede the code, select just the code first.
Codes and encoding1 code points
HTML decimal
𝜜
HTML hex
𝜜
CSS content
content: "\1D71C";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9D%9C%9C
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Letters1,265 symbols

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