The Mathematical Symbol "Element of with Overbar (⋶)"
The "Element of with Overbar" Symbol (⋶)
The ⋶ symbol visually represents the "element of" symbol (⋶) with an overbar or line placed above it. This essentially negates the symbol.
Visual Representation
It visually appears like the "element of" symbol (∈) but with an overline or bar placed right above it. This bar typically indicates negation in the context of set membership.
Meaning and Usage
This symbol signifies "not an element of" or the negation of set membership. If \( x \) is not a member of set \( A \), then it is denoted as \( x ⋶ A \).
Comparison to Other Symbols
The more standard and commonly used symbol for "not an element of" is \( \notin \). However, in some contexts or notations, the ⋶ might be used for specific reasons or to convey a nuanced meaning.
Representation in Other Contexts
In LaTeX, the direct command for the typical "not an element of" symbol is \notin. As for ⋶, it may not have a direct command since it isn't as common, and you might need to combine or overlay symbols to recreate it if necessary.
Conclusion
The ⋶ symbol, like many mathematical symbols, should be understood in context. If you're reading a mathematical text and this symbol appears, make sure to refer to the definitions or explanations provided by the author. This is especially true for symbols that aren't universally standard, as their meanings can sometimes be unique to a particular text or context.
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Codes for the ⋶ Symbol
| The Symbol | ⋶ | |
| Alt Code | Alt 8950 | |
| HTML Code | ⋶ | |
| HTML Entity | ⋶ | |
| CSS Code | \22F6 | |
| Hex Code | ⋶ | |
| Unicode | U+22F6 |
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 8950. 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: "\22F6";} </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+22F6. 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 |
|---|---|
| 22F6 [Hold down Alt] [Press x] | ⋶ (The 22F6 turns into ⋶. Note that you can omit any leading zeros.) |
| JavaScript Text | Output |
|---|---|
| let str = "\u22F6" document.write("My symbol: " + str) | My symbol: ⋶ |