HTML | Meaning | |
---|---|---|
∋ |
∋ ∋ U+220B |
Contains-as-Member Symbol The Contains-as-Member Symbol, denoted as ∋, is used in mathematics to indicate that a set contains a given element. |
∌ |
∌ U+220C |
Not-Contains-as-Member Symbol The Not-Contains-as-Member Symbol, denoted as ∌, signifies that a set does not contain a given element. |
∈ |
∈ ∈ U+2208 |
Element-of Symbol Signifies that an element is a member of a set. |
∉ |
∉ ∉ U+2209 |
Not-an-Element-of Symbol Denotes that an element does not belong to a set. |
⊇ |
⊇ ⊇ U+2287 |
Superset Symbol Represents that one set is a superset of, or is equal to, another set. |
⊃ |
⊃ ⊃ U+2283 |
Proper Superset Symbol The Proper Superset Symbol, denoted as ⊃, is used in mathematics to indicate that one set is a superset of another set but not equal to it. |
What is the Contains-as-Member Symbol?
The Contains-as-Member Symbol, symbolized by ∋, indicates that a set contains a particular element.
Example of Using Contains-as-Member
In set theory, a statement like A ∋ a reads "set A contains element a."
Comparing Contains-as-Member and Not-Contains-as-Member
The Contains-as-Member Symbol (∋) signifies inclusion of an element in a set, while the Not-Contains-as-Member Symbol (∌) denotes that a set does not contain a specific element.
Applications and Unique Uses of the Contains-as-Member Symbol
The Contains-as-Member Symbol (∋) is versatile:
- Mathematics: Essential in set theory to denote that a set includes a particular element.
- Computer Science: Employed in data structure and algorithm design to express containment relationships.
- Logic: Used in logical and mathematical expressions to illustrate the concept of containment.
Reversal of Perspective in Set Theory
While the Element-of Symbol (∈) provides a perspective from the element's point of view ("element is in set"), the Contains-as-Member Symbol (∋) offers a set-centric perspective ("set contains element"). This dual approach allows for more flexible expression of relationships in set theory and logic.
How to Type the Contains-as-Member Symbol Using Keyboard Shortcuts, Alt Codes, and LaTeX
- Windows: For some keyboards, hold down the Alt key and type
8715
on the numeric keypad, then release the Alt key. - Mac: This might vary based on specific applications and fonts.
- Linux: Press Ctrl + Shift + u, then type
220B
and press Enter. - HTML: Use the named entity
∋
or the numeric entity∋
. - LaTeX: To type the Contains-as-Member Symbol in LaTeX, use the command
\ni
or\owns
.
Symbols' Images
![Contains-as-Member Symbol](http://assets.piliapp.com/s3pxy/symbols/preview/8715.png)
![Not-Contains-as-Member Symbol](http://assets.piliapp.com/s3pxy/symbols/preview/8716.png)