HTML Entity for Not Square Original Of Equal To (⋣)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+22E3
HTML entity for Not Square Original Of Equal To symbol (U+22E3) — named nsqsupe, hex, decimal, and CSS tutorial

What You'll Learn

How to display the Not Square Original Of Equal To symbol (⋣) in HTML using named, hexadecimal, decimal, and CSS escape methods. This operator negates the “square original of or equal” relation used in order theory and formal mathematics.

This character is U+22E3 (NOT SQUARE ORIGINAL OF OR EQUAL TO) in the Mathematical Operators block (U+2200–U+22FF). Render it with the named entity ⋣, ⋣, ⋣, or CSS escape \22E3. Compare with Not Square Image Of Equal To (⋢, ⋢) and square original of or equal to (⊒, ⊒).

⚡ Quick Reference — Not Square Original Of Equal To

Unicode U+22E3

Mathematical Operators

Hex Code ⋣

Hexadecimal reference

HTML Code ⋣

Decimal reference

Named Entity ⋣

HTML5 named entity for U+22E3

Reference Table
Name           Value
────────────   ──────────
Unicode        U+22E3
Hex code       ⋣
HTML code      ⋣
Named entity   ⋣
CSS code       \22E3
Meaning        Not square original of or equal to
Related        U+2292 = square original of or equal (⊒, ⊒)
               U+22E2 = not square image of or equal (⋢, ⋢)
               U+2284 = not subset of (⊄, ⊄)
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: "\22E3";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x22E3;</p>
<p>Symbol (decimal): &#8931;</p>
<p>Symbol (named): &nsqsupe;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

U+22E3 is widely supported wherever Unicode Mathematical Operators render correctly:

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

👀 Live Preview

See ⋣ in order theory and relation notation:

Relation a ⋣ b means a is not a square original of b and a ≠ b.
Large glyph ⋣
Negation pair ⊒ square original or equal   ⋣ not square original or equal
Example x ⋣ y ⇒ ¬(x ⊒ y)
Entity refs &nsqsupe; &#x22E3; &#8931; \22E3

🧠 How It Works

1

Named Entity

&nsqsupe; is the HTML named entity for U+22E3—the most readable choice when writing mathematical relation markup.

HTML markup
2

Hexadecimal Code

&#x22E3; uses the Unicode hexadecimal value 22E3 to display the not-square-original-of-equal symbol.

HTML markup
3

Decimal HTML Code

&#8931; uses the decimal Unicode value 8931 to display the same character.

HTML markup
4

CSS Entity

\22E3 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+22E3 in Mathematical Operators (U+2200–U+22FF).

✅

Use Cases

The ⋣ symbol (&nsqsupe;) is commonly used in:

🔢 Order theory

Negating the square-original-of-or-equal relation between elements.

📚 Relation algebra

Formal definitions and proofs involving partial orders and relations.

📐 Math expressions

Textbooks, papers, and lecture notes on lattice and order notation.

💻 CS education

Discrete math and formal methods courses with web-based notation.

🎓 Online courses

Interactive math modules covering relations and partial orders.

🌐 Reference guides

Unicode charts and HTML entity documentation for math symbols.

💡 Best Practices

Do

  • Use &nsqsupe; for readable relation markup
  • Distinguish ⋣ from ⋢ (not square image of or equal, &nsqsube;)
  • 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 ⋣ with ≠ (&ne;, general not equal)
  • Confuse &nsqsupe; with &nsqsube; (⋢, opposite orientation)
  • Use padded Unicode notation like U+022E3—the correct value is U+22E3
  • Put CSS escape \22E3 in HTML text nodes
  • Use \022E3 in CSS—the correct escape is \22E3

Key Takeaways

1

Three HTML references plus CSS all render ⋣

&#x22E3; &#8931; &nsqsupe;
2

For CSS stylesheets, use the escape in the content property

\22E3
3

Unicode U+22E3 — NOT SQUARE ORIGINAL OF OR EQUAL TO

4

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

5

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

❓ Frequently Asked Questions

Use &nsqsupe; (named), &#x22E3; (hex), &#8931; (decimal), or \22E3 in CSS content. All produce ⋣.
U+22E3 (NOT SQUARE ORIGINAL OF OR EQUAL TO). Mathematical Operators block (U+2200–U+22FF). Hex 22E3, decimal 8931. Named entity: &nsqsupe;.
Use ⋣ (&nsqsupe;) for the square-original relation. Use ⋢ (&nsqsube;) for the square-image relation. They differ in orientation and mathematical meaning.
HTML references (&#8931;, &#x22E3;, or &nsqsupe;) go directly in markup. The CSS escape \22E3 is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.
Yes. &nsqsupe; is the named HTML entity for U+22E3 and is the most readable option in mathematical 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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Not Square Image Of Equal To (⋢) Not Subset Of (⊄)