HTML Entity for Double Intersection (⋒)
What You'll Learn
How to display the Double Intersection (⋒) in HTML using named, hexadecimal, decimal, and CSS entity methods. This character is U+22D2 (DOUBLE INTERSECTION) in the Mathematical Operators block (U+2200–U+22FF)—used in set theory as the double cap (double intersection of sets).
Render it with ⋒, ⋒, ⋒, or CSS escape \22D2. For single intersection use ∩ (∩); for double union use ⋓ (⋓).
⚡ Quick Reference — Double Intersection
U+22D2Mathematical Operators block
⋒Hexadecimal reference
⋒Decimal reference
⋒Most readable option
Name Value
──────────── ──────────
Unicode U+22D2
Hex code ⋒
HTML code ⋒
Named entity ⋒
CSS code \22D2Complete HTML Example
This example demonstrates the Double Intersection symbol (⋒) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape on a pseudo-element:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\22D2";
}
</style>
</head>
<body>
<p>Double Intersection using Hexadecimal: ⋒</p>
<p>Double Intersection using HTML Code: ⋒</p>
<p>Double Intersection using Named Entity: ⋒</p>
<p id="point">Double Intersection using CSS Entity: </p>
</body>
</html>🌐 Browser Support
U+22D2 is supported in modern browsers; use a font with Mathematical Operators coverage for consistent glyphs:
👀 Live Preview
See the Double Intersection (⋒) in set theory and mathematical notation:
🧠 How It Works
Named Entity
⋒ is the HTML named entity for the Double Intersection (⋒) — the most readable option in source code.
Hexadecimal Code
⋒ uses the Unicode hexadecimal value 22D2 to display the Double Intersection symbol. The x prefix indicates hexadecimal format.
Decimal HTML Code
⋒ uses the decimal Unicode value 8914 to display the same character.
CSS Entity
\22D2 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+22D2. Not single intersection ∩ (∩) or double union ⋓ (⋓).
Use Cases
The Double Intersection symbol (⋒) commonly appears in the following scenarios:
Double intersection of sets (double cap), lattice operations, and formal definitions with ⋒.
Order theory, lattice theory, and algebraic structures using cap-like operators.
Online courses and tutorials with correct set-theoretic notation in HTML.
Research papers and specs that use ⋒ in definitions or formulas.
Pair with MathML or descriptions so assistive tech interprets formulas.
Unicode and HTML entity guides for Mathematical Operators.
💡 Best Practices
Do
- Prefer
⋒for readable HTML source - Use ⋒ for double intersection (double cap) in set notation
- Use fonts that cover Mathematical Operators (U+2200–U+22FF)
- For complex math, consider MathML, MathJax, or KaTeX
- Pick one entity style per project for consistency
Don’t
- Confuse ⋒ (
⋒) with ∩ (∩, single)—case matters - Use CSS escape
\22D2inside HTML markup - Mix up double intersection (⋒) and double union (⋓,
⋓) - Mix hex, decimal, and named styles randomly in one file
- Forget UTF-8 (
<meta charset="utf-8">) in your document
Key Takeaways
Four ways to render ⋒ in HTML
⋒ ⋒ ⋒For CSS stylesheets, use the escape in the content property
\22D2Unicode U+22D2 — double intersection (double cap)
Prefer ⋒ for readability in HTML source
Single ∩ (∩) vs double ⋒ (⋒)
❓ Frequently Asked Questions
⋒ (named), ⋒ (hex), ⋒ (decimal), or \22D2 in CSS content. All produce ⋒.U+22D2 (DOUBLE INTERSECTION). Mathematical Operators block (U+2200–U+22FF). Hex 22D2, decimal 8914. Used as the double cap in set theory and mathematics.∩, U+2229) is the standard cap. Double intersection (⋒, ⋒, U+22D2) is the double cap. Named entities differ by case: ∩ vs ⋒.⋒ (capital C, ap) is the named HTML entity for U+22D2. It renders as ⋒ and is the most readable option when writing HTML by hand.Explore More HTML Entities!
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