The Mathematical Symbol "Superset of with Not Equal To (⊋)"

The "Superset of with Not Equal To" Symbol (⊋)

The ⊋ symbol represents a specific mathematical relationship that signifies one set being a superset of another, but not equal to the latter set. It combines the symbols for "superset of" and "not equal to".

Visual Representation

The ⊋ symbol visually merges the "superset of" symbol (⊃) with a strike or slash, indicating the inequality. The strike through the symbol is to indicate that while one set is a superset of the other, they aren't identical sets.


In set theory and related areas of mathematics, ⊋ is used to denote that one set, say A, is a superset of another set, say B, but A and B are not the same set. For instance, if A = {1, 2, 3, 4} and B = {2, 3}, then A is a superset of B but not equal to B, which can be denoted as A ⊋ B.

Typing ⊋

To represent the "Superset of with Not Equal To" symbol in documents or platforms that support HTML entities, you can use the ⊋ entity. The appearance of the symbol might vary slightly based on the font and platform being used. If working outside of an HTML environment, specialized math software or libraries might be needed for accurate display.

Related Symbols

Here are some symbols related to ⊋ within the realm of set theory:

  • ⊃ (Superset Of)
  • ⊂ (Subset Of)
  • ⊊ (Subset of with Not Equal To)
  • ≠ (Not Equal To)


Symbols like ⊋ provide a concise way to express specific relationships between sets in mathematical notation. They condense complex ideas into easily readable forms, allowing mathematicians and students to communicate and understand these ideas more efficiently.

Mathematical symbol 'Superset of with Not Equal To'

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Codes for the ⊋ Symbol

The Symbol
Alt CodeAlt 8843
HTML Code⊋
HTML Entity⊋
CSS Code\228B
Hex Code⊋

How To Insert the ⊋ Symbol

(Method 1) Copy and paste the symbol.

The easiest way to get the ⊋ symbol is to copy and paste it into your document.

Bear in mind that this is a UTF-8 encoded character. It must be encoded as UTF-8 at all stages (copying, replacing, editing, pasting), otherwise it will render as random characters or the dreaded �.

(Method 2) Use the "Alt Code."

If you have a keyboard with a numeric pad, you can use this method. Simply hold down the Alt key and type 8843. When you lift the Alt key, the symbol appears. ("Num Lock" must be on.)

(Method 3) Use the HTML Decimal Code (for webpages).

HTML TextOutput
<b>My symbol: &#8843;</b>My symbol: ⊋

(Method 4) Use the HTML Entity Code (for webpages).

HTML TextOutput
<b>My symbol: &supne;</b>My symbol: ⊋

(Method 5) Use the CSS Code (for webpages).

CSS and HTML TextOutput
span:after {
content: "\228B";}
<span>My symbol:</span>
My symbol: ⊋

(Method 6) Use the HTML Hex Code (for webpages and HTML canvas).

HTML TextOutput
<b>My symbol: &#x228B;</b>My symbol: ⊋
On the assumption that you already have your canvas and the context set up, use the Hex code in the format 0x228B to place the ⊋ symbol on your canvas. For example:
JavaScript Text
const x = "0x"+"E9"
ctx.fillText(String.fromCodePoint(x), 5, 5);

(Method 7) Use the Unicode (for various, e.g. Microsoft Office, JavaScript, Perl).

The Unicode for ⊋ is U+228B. The important part is the hexadecimal number after the U+, which is used in various formats. For example, in Microsoft Office applications (e.g. Word, PowerPoint), do the following:
[Hold down Alt]
[Press x]

(The 228B turns into ⊋. Note that you can omit any leading zeros.)
In JavaScript, the syntax is \uXXXX. So, our example would be \u228B. (Note that the format is 4 hexadecimal characters.)
JavaScript TextOutput
let str = "\u228B"
document.write("My symbol: " + str)
My symbol: ⊋