What 𝚬 means
Mathematical type weight can tell readers that a letter represents a different variable or kind of quantity. One established convention uses bold for vectors, especially in physics and applied mathematics.
Gibbs’s 1881 Elements of Vector Analysis used small Greek letters for vectors—quantities with size and direction. Wilson’s 1901 textbook helped make bold type influential for distinguishing vectors from plain scalar quantities. Later authors used type weight for other distinctions. Unicode accepted the STIX mathematical-alphabet proposal in 1999 so styled letters could retain their distinctions in plain text.
Why does 𝚬 turn into Ε?
NFKC can map it to plain Greek Ε.
NFKC is a Unicode compatibility-cleanup mode that reduces specially styled letters to their Greek or Latin base letters. Text processed this way can lose the distinction between 𝚬 and an unstyled epsilon.
Part of the collection
Don't confuse it with
1Related characters
2
Questions people ask
1Why does 𝚬 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
More like this
13
ΕGreek Capital Letter Epsilon
εGreek Small Letter Epsilon𝛦Mathematical Italic Capital Epsilon
ELatin Capital Letter E𝛆Mathematical Bold Small Epsilon𝚪Mathematical Bold Capital Gamma𝚫Mathematical Bold Capital Delta𝚭Mathematical Bold Capital Zeta
µMicro SignʹGreek Numeral Sign
ـArabic Tatweel℀Account Of℁Addressed To The SubjectHow to type or find 𝚬
- Search it as
- epsilon latex · greek epsilon · bold epsilon
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝚬\1D6ACCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.