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.
Usage
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)
Conclusion
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.
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Codes for the ⊋ Symbol
| The Symbol | ⊋ | |
| Alt Code | Alt 8843 | |
| HTML Code | ⊋ | |
| HTML Entity | ⊋ | |
| CSS Code | \228B | |
| Hex Code | ⊋ | |
| Unicode | U+228B |
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 Text | Output |
|---|---|
| <b>My symbol: ⊋</b> | My symbol: ⊋ |
(Method 4) Use the HTML Entity Code (for webpages).
| HTML Text | Output |
|---|---|
| <b>My symbol: ⊋</b> | My symbol: ⊋ |
(Method 5) Use the CSS Code (for webpages).
| CSS and HTML Text | Output |
|---|---|
|
<style> span:after { content: "\228B";} </style> <span>My symbol:</span> | My symbol: ⊋ |
(Method 6) Use the HTML Hex Code (for webpages and HTML canvas).
| HTML Text | Output |
|---|---|
| <b>My symbol: ⊋</b> | My symbol: ⊋ |
| JavaScript Text |
|---|
|
const x = "0x"+"E9" ctx.fillText(String.fromCodePoint(x), 5, 5); |
| Output |
⊋ |
(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:| Type | Output |
|---|---|
| 228B [Hold down Alt] [Press x] | ⊋ (The 228B turns into ⊋. Note that you can omit any leading zeros.) |
| JavaScript Text | Output |
|---|---|
| let str = "\u228B" document.write("My symbol: " + str) | My symbol: ⊋ |