U+22A4\top⊤<mo>⊤</mo>Semantic identity and intent
Characters to distinguish
- ⊥ — Bottom
- ¬ — Logical Not
Use ⊤ in the right format
Meaning and usage
Represents truth, the greatest element, or a top type depending on the formal system.
Use it in logic or order theory only after the ambient interpretation is clear.
Pronunciation: top symbol
Formula examples
P\lor\neg P=\topHow to type Top Symbol
- Windows
- Use Character Map and search for Top Symbol, or paste the Unicode character (U+22A4).
- macOS
- Open Character Viewer with Control–Command–Space and search for Top Symbol.
- Microsoft Word
- In an equation, type \top and press Space when Word supports the command; otherwise insert the Unicode character.
- 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 \top.
- Excel
- Paste ⊤ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Define the logical convention before using ⊤; proof, programming, and Boolean-algebra sources may assign different precedence or direction.
- For plain text, copy ⊤ as U+22A4; for structured equations, use \top in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Top Symbol.
When to use ⊤
- Use ⊤ in plain text when a Unicode character is appropriate and the destination preserves U+22A4.
- Use \top in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Top Symbol is used in logic with a field-specific convention.
Look-alikes and related characters
- ⊥ — Bottom
- ¬ — Logical Not
Font and compatibility notes
Glyph shape can vary by font. Verify the code point after copying, and prefer LaTeX or MathML for structured equations.
Continue the workflow
From Top Symbol to a finished equation
- Copy the characterUse ⊤ in plain text when Unicode is accepted.
- Choose a structured formatUse
\topfor 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: specialist
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 Top Symbol symbol mean?
Represents truth, the greatest element, or a top type depending on the formal system.
What is the LaTeX command for ⊤?
Use \top in a compatible math environment.
Can I copy ⊤ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.