The Mathematical Symbol "Right Semidirect Product (⋌)"

The "Right Semidirect Product" Symbol (⋌)

The ⋌ symbol, commonly referred to as the "Right Semidirect Product", plays a significant role in the world of algebra, specifically group theory. It denotes a particular kind of product of two groups.

Understanding the Semidirect Product

A semidirect product is a generalization of the concept of a direct product of groups. In a direct product, the structure of both groups remains independent of one another. However, in the case of a semidirect product, one group acts on the other, which induces a certain intertwining structure between them.

The ⋌ symbol indicates that a group is being acted upon from the right side by another group, leading to the right semidirect product.


If \( H \) and \( N \) are groups and \( H \) acts on \( N \) from the right side, then their right semidirect product can be represented as \( N ⋌ H \).

Significance in Group Theory

The concept of semidirect products, including right semidirect products, allows for the construction of new groups from given ones. This is especially beneficial when analyzing non-abelian groups, as it provides insights into the structural interdependencies between different group elements and operations.


Right semidirect products, represented by the ⋌ symbol, find applications in various mathematical and scientific disciplines:

  • Crystallography: The study of crystal structures and symmetries can be explained using the concepts of group products, including semidirect products.
  • Physics: In the realm of quantum mechanics and particle physics, group structures help describe various physical systems, transformations, and interactions. Semidirect products can represent certain composite systems or combined operations.

In summary, the ⋌ symbol and the concept of the right semidirect product provide mathematicians and scientists with a robust tool to delve deeper into the intricate relationships between algebraic structures and understand their implications in various fields.

Mathematical symbol 'Right Semidirect Product'

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Codes for the ⋌ Symbol

The Symbol
Alt CodeAlt 8908
HTML Code⋌
HTML Entity⋌
CSS Code\22CC
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 8908. 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: &#8908;</b>My symbol: ⋌

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

HTML TextOutput
<b>My symbol: &rthree;</b>My symbol: ⋌

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

CSS and HTML TextOutput
span:after {
content: "\22CC";}
<span>My symbol:</span>
My symbol: ⋌

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

HTML TextOutput
<b>My symbol: &#x22CC;</b>My symbol: ⋌
On the assumption that you already have your canvas and the context set up, use the Hex code in the format 0x22CC 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+22CC. 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 22CC turns into ⋌. Note that you can omit any leading zeros.)
In JavaScript, the syntax is \uXXXX. So, our example would be \u22CC. (Note that the format is 4 hexadecimal characters.)
JavaScript TextOutput
let str = "\u22CC"
document.write("My symbol: " + str)
My symbol: ⋌