# Union Symbol

## Copy and Paste

Click to Copy ▼
=
HTML Meaning
`&cup;`
`&#8746;`
`U+222A`
Union Symbol
The Union Symbol, denoted as ∪, represents the mathematical concept of union, which is the set containing all distinct elements from two or more sets.

### What is the Union Symbol?

The Union Symbol, symbolized by ∪, is used in set theory to denote the union of two or more sets. A union contains all distinct elements from all the sets under consideration.

### Applications of the Union Symbol in Various Fields

The Union Symbol (∪) has applications in multiple disciplines:

• Mathematics: Widely used in set theory, algebra, and other mathematical contexts.
• Computer Science: Employed in algorithms and data structures like linked lists and arrays.
• Statistics: Used to represent the likelihood of any event from multiple possible events occurring.
• Engineering: Utilized in systems theory and control theory.

### Differences Between Union and Intersection

While both the Union Symbol (∪) and the Intersection Symbol (∩) are used to combine sets, they do so in different ways. Union represents the combination of all distinct elements from the sets involved, whereas intersection represents only the elements that are common to all sets.

### How to Type the Union Symbol Using Keyboard Shortcuts, Alt Codes, and LaTeX

• Windows: Hold down the Alt key and type `238` on the numeric keypad, then release the Alt key.
• Mac: Press Option + v.
• Linux: Press Ctrl + Shift + u, then type `222A` and press Enter.
• HTML: Use the named entity `&cup;` or the numeric entity `&#8746;`.
• LaTeX: To type the Union Symbol in LaTeX, use the command `\cup`.