What 𝚼 means
The equation gives 𝚼 its particular meaning.
𝚼 is Greek capital upsilon in bold mathematical form. It can name a different quantity from plain Υ; the equation’s own definitions tell you what it represents.
Where does Greek upsilon come from?
Greek upsilon developed from Phoenician waw, a consonant letter.
Greek writers adapted it as a vowel. The earliest surviving Greek alphabetic inscriptions are usually dated to around 775–750 BCE; they attest the Greek letter behind 𝚼.
Part of the collection
Don't confuse it with
1Questions people ask
1Can NFKC turn 𝚼 into Υ?
Yes. NFKC is a Unicode text-normalization process that folds compatibility variants together. It changes 𝚼 to plain Υ, erasing the bold distinction, so avoid applying it to a formula where that distinction matters.
How to type or find 𝚼
- Also called
- bold upsilon · math bold upsilon
- Search it as
- math upsilon · Greek upsilon
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝚼\1D6BCunicode-math package, enter \mbfUpsilon.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.


