HTML Entity for Not Asymptotically Equal To (≄)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+2244

What You'll Learn

How to display the Not Asymptotically Equal To symbol (≄) in HTML using named, hexadecimal, decimal, and CSS escape methods. This mathematical operator negates asymptotic equality and is used when two functions or sequences are not asymptotically equal (e.g. f(x) ≄ g(x) as x → ∞).

This character is U+2244 (NOT ASYMPTOTICALLY EQUAL TO) in the Mathematical Operators block (U+2200–U+22FF). Render it with the named entity ≄, ≄, ≄, or CSS escape \2244. Compare with Asymptotically Equal To (≃, ≃) and Not Almost Equal To (≉).

⚡ Quick Reference — Not Asymptotically Equal To

Unicode U+2244

Mathematical Operators

Hex Code ≄

Hexadecimal reference

HTML Code ≄

Decimal reference

Named Entity ≄

HTML5 named entity for U+2244

Reference Table
Name           Value
────────────   ──────────
Unicode        U+2244
Hex code       ≄
HTML code      ≄
Named entity   ≄
CSS code       \2244
Meaning        Not asymptotically equal to
Related        U+2243 = asymptotically equal (≃, ≃)
               U+2248 = almost equal (≈, ≈)
               U+2249 = not almost 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: "\2244";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x2244;</p>
<p>Symbol (decimal): &#8772;</p>
<p>Symbol (named): &nsime;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

U+2244 is widely supported wherever Unicode Mathematical Operators render correctly:

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

👀 Live Preview

See ≄ in asymptotic analysis and mathematical relation contexts:

Asymptotic relation f(x) ≄ g(x) as x → ∞
Large glyph
Comparison family ≃ asymptotically equal   ≄ not asymptotically equal   ≈ almost equal
Example n! ≄ nn
Entity refs &nsime; &#x2244; &#8772; \2244

🧠 How It Works

1

Named Entity

&nsime; is the HTML named entity for U+2244—the most readable choice when writing asymptotic-relation markup.

HTML markup
2

Hexadecimal Code

&#x2244; uses the Unicode hexadecimal value 2244 to display the not-asymptotically-equal symbol.

HTML markup
3

Decimal HTML Code

&#8772; uses the decimal Unicode value 8772 to display the same character.

HTML markup
4

CSS Entity

\2244 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+2244 in Mathematical Operators (U+2200–U+22FF).

Use Cases

The ≄ symbol (&nsime;) is commonly used in:

📐 Mathematical analysis

Expressing that functions or sequences are not asymptotically equal.

📚 Academia

Calculus, real analysis, and asymptotic theory published as HTML.

⚙ Computer science

Algorithm analysis and complexity notation in online materials.

💻 CS education

Big-O and asymptotic growth comparisons in course content.

🎓 Online courses

Interactive math modules with web-based notation.

🌐 Reference guides

Unicode charts and HTML entity documentation for math symbols.

💡 Best Practices

Do

  • Use &nsime; for readable asymptotic-relation markup
  • Distinguish ≄ from ≃ (asymptotically equal) and ≈ (almost equal)
  • 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 ≄ (&nsime;) with ≃ (&sime;)
  • Confuse ≄ with ≉ (not almost equal) or ≈ (almost equal)
  • Use padded Unicode notation like U+02244—the correct value is U+2244
  • Put CSS escape \2244 in HTML text nodes
  • Use \02244 in CSS—the correct escape is \2244

Key Takeaways

1

Three HTML references plus CSS all render ≄

&#x2244; &#8772; &nsime;
2

For CSS stylesheets, use the escape in the content property

\2244
3

Unicode U+2244 — NOT ASYMPTOTICALLY EQUAL TO

4

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

5

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

❓ Frequently Asked Questions

Use &nsime; (named), &#x2244; (hex), &#8772; (decimal), or \2244 in CSS content. All produce ≄.
U+2244 (NOT ASYMPTOTICALLY EQUAL TO). Mathematical Operators block (U+2200–U+22FF). Hex 2244, decimal 8772. Named entity: &nsime;.
Use ≄ when two functions or sequences are specifically not asymptotically equal. Use ≃ (&sime;) for asymptotic equality and ≈ (&asymp;) for approximate or almost-equal values.
HTML references (&#8772;, &#x2244;, or &nsime;) go directly in markup. The CSS escape \2244 is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.
Yes. &nsime; is the named HTML entity for U+2244 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

  • Experience 12 years building web and cloud systems
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I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

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