What 𝕩 means
It gave mathematicians a way to mark bold letters by hand. On a chalkboard, mathematicians doubled selected strokes so bold letters stood out; the style became known as blackboard bold. Printers later turned that cue into a type style. An early printed example appears in Gunning and Rossi's 1965 textbook on complex analysis, the study of functions involving complex numbers. Digital math alphabets preserve the distinction between ordinary, italic, and double-struck letters.
Don't confuse it with
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Related characters
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Questions people ask
1Why did 𝕩 turn into x?
A text-normalization form called NFKC maps it to plain x. The letter remains, but the double-struck style disappears, so differently styled mathematical variables can become indistinguishable.
More like this
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Collections with 𝕩
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How to type or find 𝕩
- Search it as
- blackboard bold x · double-struck x · double struck x · fancy x
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝕩\1D5691D569 and press Alt+X; select the code first if needed. Choose a font with this glyph.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.