What ℽ means
Insert ℽ through a Unicode-aware picker or code-point entry.
With XeLaTeX or LuaLaTeX, unicode-math can access ℽ if the selected math font includes it. Traditional \mathbb{\gamma} setups may need extra package or font support for lowercase Greek.
What does ℽ mean in a formula?
Its mathematical meaning comes from the writer's definition. ℽ is lowercase Greek gamma drawn with double strokes. The blackboard-bold style does not give it one standard value, set, or function; read the surrounding formula and its notation definitions.
The wider blackboard-bold style developed as a practical way for mathematicians to make letters stand out on blackboards; typewriter users could imitate bold by striking a character twice. It took shape in the late 1950s and early 1960s and spread into mathematical publishing. The style became familiar for number sets, while lowercase Greek forms like ℽ remained much less standardized.
Part of the collection
What it means when someone sends it to you
2 readingsThe object the writer assigns to lowercase gamma; follow that definition.
Don't confuse it with
2
Questions people ask
1Can fonts make ℽ look different or disappear?
Yes. A math font without ℽ can trigger a fallback design or show a missing-glyph box.
More like this
10
How to type or find ℽ
- Also called
- double-struck gamma · blackboard-bold gamma
- Search it as
- ℽ · double struck gamma · blackboard bold gamma · mathbb gamma
- Shows up in
- Anything that takes text · its shape is whatever your font draws
ℽ\213D\mathbb{\gamma} may need extra support for lowercase Greek.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.