HTML Entity for Not Normal Subgroup Of Equal To (⋬)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+22EC
HTML entity for Not Normal Subgroup Of Equal To symbol (U+22EC) — named nltrie, hex, decimal, and CSS tutorial

What You'll Learn

How to display the Not Normal Subgroup Of Equal To symbol (⋬) in HTML using named, hexadecimal, decimal, and CSS escape methods. This group-theory operator negates the “normal subgroup or equal” relation (e.g. H ⋬ G means H is neither a normal subgroup of G nor equal to G).

This character is U+22EC (DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUAL) in the Mathematical Operators block (U+2200–U+22FF). Render it with the named entity ⋬, ⋬, ⋬, or CSS escape \22EC. Compare with Not Normal Subgroup Of (⋪, ⋪).

⚡ Quick Reference — Not Normal Subgroup Of Equal To

Unicode U+22EC

Mathematical Operators

Hex Code ⋬

Hexadecimal reference

HTML Code ⋬

Decimal reference

Named Entity ⋬

HTML5 named entity for U+22EC

Reference Table
Name           Value
────────────   ──────────
Unicode        U+22EC
Hex code       ⋬
HTML code      ⋬
Named entity   ⋬
CSS code       \22EC
Meaning        Not normal subgroup of or equal to
Related        U+22EA = not normal subgroup of (⋪, ⋪)
               U+22B3 = normal subgroup of (⊳, ⊳)
               U+22ED = does not contain or equal (⋭, ⋭)
Block          Mathematical Operators (U+2200–U+22FF)
1

Complete HTML Example

A simple example showing ⋬ using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point::after{
   content: "\22EC";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x22EC;</p>
<p>Symbol (decimal): &#8940;</p>
<p>Symbol (named): &nltrie;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

U+22EC is widely supported wherever Unicode Mathematical Operators render correctly:

Chrome1+
Firefox1+
Safari1+
Edge12+
Opera4+
Android4.4+
iOS Safari1+

👀 Live Preview

See ⋬ in group theory and abstract algebra contexts:

Group relation H ⋬ G means H is not a normal subgroup of G and H ≠ G.
Large glyph ⋬
Subgroup family ⋪ not normal subgroup   ⋬ not normal subgroup or equal
Example {e, (12)} ⋬ S3
Entity refs &nltrie; &#x22EC; &#8940; \22EC

🧠 How It Works

1

Named Entity

&nltrie; is the HTML named entity for U+22EC—the most readable choice when writing group-theory markup.

HTML markup
2

Hexadecimal Code

&#x22EC; uses the Unicode hexadecimal value 22EC to display the not-normal-subgroup-or-equal symbol.

HTML markup
3

Decimal HTML Code

&#8940; uses the decimal Unicode value 8940 to display the same character.

HTML markup
4

CSS Entity

\22EC is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce: ⋬. Unicode U+22EC in Mathematical Operators (U+2200–U+22FF).

✅

Use Cases

The ⋬ symbol (&nltrie;) is commonly used in:

🔢 Group theory

Expressing that a subgroup fails the normal-subgroup-or-equal relation.

📚 Abstract algebra

Textbooks, papers, and lecture notes on groups and subgroups.

📐 Math expressions

Formal proofs and definitions involving normal subgroups.

💻 CS education

Cryptography and algebra courses covering group structures.

🎓 Online courses

Interactive math modules with web-based notation.

🌐 Reference guides

Unicode charts and HTML entity documentation for math symbols.

💡 Best Practices

Do

  • Use &nltrie; for readable group-theory markup
  • Distinguish ⋬ from ⋪ (strict not normal subgroup) and ⋭ (&nrtrie;, opposite containment)
  • Pair ⋬ with plain-language description on first use
  • Use numeric references in generated or XML-first workflows
  • Serve pages with UTF-8 (<meta charset="utf-8">)

Don’t

  • Confuse ⋬ (&nltrie;) with ⋪ (&nltri;)
  • Confuse ⋬ with ⋭ (&nrtrie;, does not contain as normal subgroup or equal)
  • Use padded Unicode notation like U+022EC—the correct value is U+22EC
  • Put CSS escape \22EC in HTML text nodes
  • Use \022EC in CSS—the correct escape is \22EC

Key Takeaways

1

Three HTML references plus CSS all render ⋬

&#x22EC; &#8940; &nltrie;
2

For CSS stylesheets, use the escape in the content property

\22EC
3

Unicode U+22EC — DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUAL

4

Mathematical Operators block (U+2200–U+22FF)

5

&nltrie; is the preferred named entity for readable source markup

❓ Frequently Asked Questions

Use &nltrie; (named), &#x22EC; (hex), &#8940; (decimal), or \22EC in CSS content. All produce ⋬.
U+22EC (DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUAL). Mathematical Operators block (U+2200–U+22FF). Hex 22EC, decimal 8940. Named entity: &nltrie;.
Use ⋬ when your notation specifically negates the “normal subgroup or equal” relation. Use ⋪ (&nltri;) for the strict “not normal subgroup of” relation without the or-equal component.
HTML references (&#8940;, &#x22EC;, or &nltrie;) go directly in markup. The CSS escape \22EC is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.
Yes. &nltrie; is the named HTML entity for U+22EC and is the most readable option in source markup.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

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