HTML Entity for N-Ary Intersection (⋂)
What You'll Learn
How to display the N-Ary Intersection symbol (⋂) in HTML using named, hexadecimal, decimal, and CSS escape methods. This character is U+22C2 (N-ARY INTERSECTION) in the Mathematical Operators block (U+2200–U+22FF)—the operator for the intersection of an indexed family of sets in set theory and logic.
Render it with the named entity ⋂, ⋂, ⋂, or CSS escape \22C2. Pair with N-Ary Coproduct (∐, ∐) in the n-ary operator family, and distinguish it from binary intersection ∩ (∩).
⚡ Quick Reference — N-Ary Intersection
U+22C2Mathematical Operators
⋂Hexadecimal reference
⋂Decimal reference
⋂Most readable in math markup
Name Value
──────────── ──────────
Unicode U+22C2
Hex code ⋂
HTML code ⋂
Named entity ⋂
CSS code \22C2
Meaning N-ary intersection (indexed family)
Related U+2229 = binary cap (∩, ∩)
U+22C3 = union (⋃, ⋃)Complete HTML Example
This example demonstrates the N-Ary Intersection (⋂) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\22C2";
}
</style>
</head>
<body>
<p>N-Ary Intersection using Hexadecimal: ⋂</p>
<p>N-Ary Intersection using HTML Code: ⋂</p>
<p>N-Ary Intersection using Named Entity: ⋂</p>
<p id="point">N-Ary Intersection using CSS Entity: </p>
</body>
</html>🌐 Browser Support
U+22C2 is widely supported wherever Unicode Mathematical Operators render correctly:
👀 Live Preview
See the N-Ary Intersection (⋂) in mathematical notation contexts:
🧠 How It Works
Named Entity
⋂ is the HTML named entity for N-Ary Intersection—often preferred in readable mathematical markup.
Hexadecimal Code
⋂ uses the Unicode hexadecimal value 22C2. The x prefix indicates hexadecimal format.
Decimal HTML Code
⋂ uses the decimal Unicode value 8898 to display the same character.
CSS Entity
\22C2 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All four methods produce: ⋂. Unicode U+22C2 in Mathematical Operators. Related: binary intersection ∩ (∩).
Use Cases
The N-Ary Intersection symbol (⋂) is commonly used in:
Intersection of indexed families of sets and nested collections.
Universal quantification over conjunctions in formal logic notation.
Discrete math textbooks, papers, and lecture materials.
Specification docs describing indexed set operations.
Online courses on sets, logic, and mathematical structures.
Unicode charts and HTML entity documentation.
💡 Best Practices
Do
- Use
⋂for readable n-ary intersection markup - Pair with ⋃ and ∩ when documenting set operator families
- Use fonts that cover Mathematical Operators (Cambria Math, etc.)
- Add
aria-label(e.g. “n-ary intersection”) for accessibility - Serve pages with UTF-8 (
<meta charset="utf-8">)
Don’t
- Confuse
⋂(⋂) with∩(∩) - Assume HTML entities perform mathematical computation
- Put CSS escape
\22C2in HTML text nodes - Mix entity styles randomly in one file
- Rely on the symbol alone without accessible description
Key Takeaways
Three HTML references plus CSS all render ⋂
⋂ ⋂ ⋂For CSS stylesheets, use the escape in the content property
\22C2Unicode U+22C2 — N-ARY INTERSECTION
⋂ is the standard named entity
Related: N-Ary Coproduct (∐) and binary intersection (∩, ∩)
❓ Frequently Asked Questions
⋂ (named), ⋂ (hex), ⋂ (decimal), or \22C2 in CSS content. All produce ⋂.U+22C2 (N-ARY INTERSECTION). Mathematical Operators block (U+2200–U+22FF). Hex 22C2, decimal 8898. Named entity: ⋂.U+22C2, ⋂) is the n-ary intersection operator over indexed families. ∩ (U+2229, ∩) is binary intersection of two sets. They look similar but serve different notation contexts.⋂, ⋂, or ⋂) go directly in markup. The CSS escape \22C2 is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.Explore More HTML Entities!
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