Element of with Two Horizontal Strokes

The Mathematical Symbol "Element of with Two Horizontal Strokes (⋹)"

The "Element Of with Two Horizontal Strokes" Symbol (⋹)

The ⋹ symbol is a specialized notation within set theory and mathematics, extending the concept of membership.

Visual Representation

The symbol appears as the regular "Element Of" (⋹) notation with two additional horizontal lines through the middle. It can be represented as ∉ or 🞹. It indicates a particular relationship between an element and a set, especially in certain advanced mathematical contexts.

Meaning and Usage

Depending on the context, ⋹ can mean "element of" with a specific or generalized condition or restriction. It's less standard than the simple ∈ and its exact interpretation may vary depending on the context in which it's used. It's important to refer to the defining literature or the context of a given mathematical discourse to ascertain its precise meaning.

Examples

Because its usage is more specialized, examples may vary based on the specific context. In some mathematical areas, \( x ⋹ A \) might denote that \( x \) is an element of set \( A \) with some special or additional properties not shared by all members of \( A \).

Representation in Other Contexts

In LaTeX, there isn't a direct command for this symbol due to its less standard nature. However, you can achieve it using certain packages or combining symbols.

Application in Mathematics

Though less common than the basic ∈, the ⋹ symbol might appear in more advanced mathematical topics, particularly when there's a need to distinguish between ordinary membership and a membership with particular attributes or conditions.

Conclusion

The ⋹ symbol, while less standard than its simpler counterpart, represents a nuanced idea in mathematics. To fully understand its meaning in a specific context, one might need to refer to the specific literature or mathematical discourse where it appears.

Are You Good at Mathematical Symbols?

Do you know, or can you guess, the technical symbols? Well, let's see! Show Instructions

Codes for the ⋹ Symbol

The Symbol	⋹	copy
Alt Code	Alt 8953	copy
HTML Code	⋹	copy
HTML Entity	⋹	copy
CSS Code	\22F9	copy
Hex Code	⋹	copy
Unicode	U+22F9	copy

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 8953. 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: &#8953;</b>	My symbol: ⋹

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

HTML Text	Output
<b>My symbol: &isinE;</b>	My symbol: ⋹

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

CSS and HTML Text	Output
<style> span:after { content: "\22F9";} </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: &#x22F9;</b>	My symbol: ⋹

On the assumption that you already have your canvas and the context set up, use the Hex code in the format 0x22F9 to place the ⋹ symbol on your canvas. For example:

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+22F9. 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
22F9 [Hold down Alt] [Press x]	⋹ (The 22F9 turns into ⋹. Note that you can omit any leading zeros.)

In JavaScript, the syntax is \uXXXX. So, our example would be \u22F9. (Note that the format is 4 hexadecimal characters.)

JavaScript Text	Output
let str = "\u22F9" document.write("My symbol: " + str)	My symbol: ⋹