ℵ
Unicode
U+2135LaTeX
\alephHTML entity
HTML decimal
ℵMathML
<mi>ℵ</mi>Semantic identity and intent
Characters to distinguish
- ℕ — Natural Numbers
- ∀ — For All
Use ℵ in the right format
Meaning and usage
Represents infinite cardinal numbers in set theory.
Use a subscript such as aleph-zero to identify a particular infinite cardinality.
Pronunciation: aleph symbol
Formula examples
\aleph_0How to type Aleph Symbol
- Windows
- Use Character Map and search for Aleph Symbol, or paste the Unicode character (U+2135).
- macOS
- Open Character Viewer with Control–Command–Space and search for Aleph Symbol.
- Microsoft Word
- In an equation, type \aleph and press Space when Word supports the command; otherwise insert the Unicode character.
- iPhone and iPad
- Copy and paste ℵ, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
- Android
- Copy and paste ℵ, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
- Google Docs
- For plain text, paste ℵ or use Insert → Special characters. For structured math, use the equation editor and verify \aleph.
- Excel
- Paste ℵ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Do not reuse ℵ as an unrelated variable when it denotes Aleph Symbol; define any nonstandard meaning explicitly.
- For plain text, copy ℵ as U+2135; for structured equations, use \aleph in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Aleph Symbol.
When to use ℵ
- Use ℵ in plain text when a Unicode character is appropriate and the destination preserves U+2135.
- Use \aleph in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Aleph Symbol is used in number sets, number theory with a field-specific convention.
Look-alikes and related characters
- ℕ — Natural Numbers
- ∀ — For All
Font and compatibility notes
Font coverage varies; verify the code point and destination rendering before publication.
Continue the workflow
From Aleph Symbol to a finished equation
- Copy the characterUse ℵ in plain text when Unicode is accepted.
- Choose a structured formatUse
\alephfor 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 Aleph Symbol symbol mean?
Represents infinite cardinal numbers in set theory.
What is the LaTeX command for ℵ?
Use \aleph in a compatible math environment.
Can I copy ℵ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.