Square cap (⊓) is the Unicode character at U+2293 in Mathematical Operators. Official name: SQUARE CAP. It is often used as a lattice meet or square-style “cap” operator in math notation.
Remember
Character ⊓
Unicode U+2293
Named entity ⊓
Hex entity ⊓
Decimal ⊓
CSS escape \2293
Not the same ∩ · ⊔ · ̻
Prefer ⊓ in HTML markup. You can also type ⊓ in UTF-8, or use numeric forms when needed. For ordinary set intersection, use ∩ (∩) instead.
Using Named Entity: ⊓
Using Hex Code: ⊓
Using HTML Code: ⊓
Using CSS Entity: ⊓
Typed directly: ⊓
Notation: A ⊓ B
How It Works
1. Named:⊓ is the HTML5 name for U+2293 → ⊓. Best default in markup.
2. Hex:U+2293 → ⊓ in HTML. Same glyph as the named form.
3. Decimal: same code point as 8851 → ⊓. Same result as hex and named.
4. CSS: use \2293 in content (not an HTML entity). #point::after appends that ⊓ after the paragraph text.
5. Typed / notation: paste ⊓ in UTF-8, or write A ⊓ B for a short meet expression.
Pitfalls & Tips
Common mistakes when working with ⊓.
vs ∩
Not ordinary intersection
U+2229 (∩, ∩) is the common set intersection. U+2293 is the square-style cap / meet.
vs ⊔
Not square cup
⊔ (U+2294, ⊔) is the dual join operator. Do not swap it with ⊓.
vs U+033B
Not combining square below
U+033B attaches a square under a letter. ⊓ is a standalone math operator.
Name
Remember ⊓
The named entity is ⊓ — not ∩ (that is U+2229).
CSS vs HTML
Do not mix escapes
\2293 belongs in CSS strings. ⊓ / ⊓ / ⊓ belong in HTML.
Semicolon
End named entities
Always finish with ; — write ⊓, not &sqcap.
Compatibility
Browser Support
Square cap (U+2293) and its entity forms (⊓, ⊓, ⊓, CSS \\2293) are supported in all mainstream browsers. Visible glyphs depend on Mathematical Operators font coverage.
✓ Universal support
Square Cap (⊓)
Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+2293 / entitiesFull support
Bottom line: Prefer ⊓ in HTML. Use ⊓ / ⊓ when numeric form is required, and \\2293 only inside CSS content.
Remember
Key Takeaways
Unicode: square cap is U+2293 (decimal 8851) — glyph ⊓.
HTML: prefer ⊓ — also ⊓ / ⊓ / type ⊓.
Use ⊓ (named), ⊓ (hex), ⊓ (decimal), type ⊓ directly in UTF-8, or the CSS escape \2293 in content. Prefer ⊓ in normal HTML.
U+2293 (SQUARE CAP). Hex 2293, decimal 8851. It belongs to Mathematical Operators (U+2200–U+22FF).
Yes. Use ⊓. Numeric forms ⊓ and ⊓ also work.
No. ⊓ is U+2293 (⊓). ∩ is U+2229 (∩). ⊔ is U+2294 (⊔, square cup).
Use it for square-cap / lattice-meet notation in set theory, order theory, and academic math — not as a substitute for ordinary intersection ∩.
HTML entities (⊓, ⊓, or ⊓) go in markup. The CSS escape \2293 goes in stylesheet strings (usually content on ::before/::after).
🤔
Did you know?
Square cap is Unicode U+2293 (decimal 8851) — glyph ⊓ in Mathematical Operators (U+2200–U+22FF). HTML5 names it ⊓. Official name: SQUARE CAP. Often used as a lattice meet (⊓). Do not confuse with intersection U+2229 (∩, ∩), square cup U+2294 (⊔, ⊔), or combining square below U+033B.
