ℙ
Unicode
U+2119LaTeX
\mathbb{P}HTML entity
HTML decimal
ℙMathML
<mi>ℙ</mi>Semantic identity and intent
Characters to distinguish
- ℝ — Real Numbers
- ℂ — Complex Numbers
Use ℙ in the right format
Meaning and usage
Commonly denotes a probability measure or a probability statement.
Use it before an event in parentheses or brackets according to the chosen probability convention.
Pronunciation: blackboard bold p
Formula examples
\mathbb{P}(A)=0.5How to type Blackboard Bold P
- Windows
- Use Character Map and search for Blackboard Bold P, or paste the Unicode character (U+2119).
- macOS
- Open Character Viewer with Control–Command–Space and search for Blackboard Bold P.
- Microsoft Word
- In an equation, type \mathbb{P} and press Space when Word supports the command; otherwise insert the Unicode character.
- iPhone and iPad
- Copy and paste ℙ, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
- Android
- Copy and paste ℙ, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
- Google Docs
- For plain text, paste ℙ or use Insert → Special characters. For structured math, use the equation editor and verify \mathbb{P}.
- Excel
- Paste ℙ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Do not substitute a visually similar Latin or differently styled character for ℙ; case and mathematical alphabet style can identify different quantities.
- For plain text, copy ℙ as U+2119; for structured equations, use \mathbb{P} in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Blackboard Bold P.
When to use ℙ
- Use ℙ in plain text when a Unicode character is appropriate and the destination preserves U+2119.
- Use \mathbb{P} in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Blackboard Bold P is used in probability, math alphanumeric with a field-specific convention.
Look-alikes and related characters
- ℝ — Real Numbers
- ℂ — Complex Numbers
Font and compatibility notes
Font coverage varies; verify the code point and destination rendering before publication.
Continue the workflow
From Blackboard Bold P to a finished equation
- Copy the characterUse ℙ in plain text when Unicode is accepted.
- Choose a structured formatUse
\mathbb{P}for LaTeX or the MathML snippet for accessible web equations. - Edit or convertOpen the value in the editor or converter without retyping it.
Review and source notes
Quality tier: catalog
Last reviewed: 2026-07-23
Review method: Catalog review of character identity and notation mappings.
Verified against: Unicode Standard, Unicode mathematical notation guidance, and established LaTeX/MathML syntax.
Reference sources
- The Unicode StandardUnicode Consortium — Character identity, encoding, names, and conformance.
- Unicode Character Code ChartsUnicode Consortium — Code points and official character charts.
Frequently asked questions
What does the Blackboard Bold P symbol mean?
Commonly denotes a probability measure or a probability statement.
What is the LaTeX command for ℙ?
Use \mathbb{P} in a compatible math environment.
Can I copy ℙ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.