⊈
Unicode
U+2288LaTeX
\nsubseteqHTML entity
⊈HTML decimal
⊈MathML
<mo>⊈</mo>Semantic identity and intent
Characters to distinguish
- ⊆ — Subset or Equal To
Use ⊈ in the right format
Meaning and usage
States that the first set is not contained in the second set.
A single counterexample element is enough to establish this relation.
Pronunciation: not a subset of or equal to
Formula examples
A⊈BHow to type Not a Subset Of or Equal To
- Windows
- Use Character Map or enter U+2288 in a Unicode-aware application.
- macOS
- Open Character Viewer with Control–Command–Space and search by the symbol name.
- Microsoft Word
- In an equation, type \nsubseteq and press Space when Word supports the command.
- iPhone and iPad
- Copy and paste ⊈, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
- Android
- Copy and paste ⊈, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
- Google Docs
- For plain text, paste ⊈ or use Insert → Special characters. For structured math, use the equation editor and verify \nsubseteq.
- Excel
- Paste ⊈ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Check whether ⊈ allows equality in the convention you are using; strict and non-strict subset symbols are not interchangeable.
- For plain text, copy ⊈ as U+2288; for structured equations, use \nsubseteq in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Not a Subset Of or Equal To.
When to use ⊈
- Use ⊈ in plain text when a Unicode character is appropriate and the destination preserves U+2288.
- Use \nsubseteq in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Not a Subset Of or Equal To is used in set theory with a field-specific convention.
Look-alikes and related characters
- ⊆ — Subset or Equal To
Font and compatibility notes
Font coverage varies; verify the code point and destination rendering before publication.
Continue the workflow
From Not a Subset Of or Equal To to a finished equation
- Copy the characterUse ⊈ in plain text when Unicode is accepted.
- Choose a structured formatUse
\nsubseteqfor 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 Not a Subset Of or Equal To symbol mean?
States that the first set is not contained in the second set.
What is the LaTeX command for ⊈?
Use \nsubseteq in a compatible math environment.
Can I copy ⊈ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.