HTML | Meaning | |
---|---|---|

∈ |
`∈` `∈` `U+2208` |
Element-of SymbolThe Element-of Symbol, denoted as ∈, is used in mathematics to indicate that an element belongs to a set. |

∉ |
`∉` `∉` `U+2209` |
Not-an-Element-of SymbolThe Not-an-Element-of Symbol, denoted as ∉, signifies that an element does not belong to a set. |

⊆ |
`⊆` `⊆` `U+2286` |
Subset SymbolRepresents that one set is a subset of, or is equal to, another set. |

⊂ |
`⊂` `⊂` `U+2282` |
Proper Subset SymbolThe Proper Subset Symbol, denoted as ⊂, is used in mathematics to indicate that one set is a subset of another set but not equal to it. |

∋ |
`∋` `∋` `U+220B` |
Contains-as-Member SymbolIndicates that a set contains the following element. |

∌ |
`∌` `U+220C` |
Not-Contains-as-Member SymbolThe Not-Contains-as-Member Symbol, denoted as ∌, signifies that a set does not contain the following element. |

### What is the Element-of Symbol?

The Element-of Symbol, symbolized by ∈, signifies that an element is a member of a set.

### Example of Using Element-of

In set theory, you might see a statement like a ∈ A, which reads "a is an element of set A."

### Comparing Element-of and Not-an-Element-of

The Element-of Symbol (∈) indicates membership within a set, while the Not-an-Element-of Symbol (∉) denotes non-membership or exclusion from a set.

### Applications and Unique Uses of the Element-of Symbol

The Element-of Symbol (∈) has various applications:

**Mathematics:**Fundamental in set theory to represent the membership of an element within a set.**Computer Science:**Used in algorithms and pseudocode to check if an item belongs to a collection.**Logic:**Utilized in logical expressions to depict relationships among sets.

### How to Type the Element-of Symbol Using Keyboard Shortcuts, Alt Codes, and LaTeX

**Windows:**For some keyboards, hold down the`Alt`key and type`8712`

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`2208`

and press`Enter`.**HTML:**Use the named entity`∈`

or the numeric entity`∈`

.**LaTeX:**To type the Element-of Symbol in LaTeX, use the command`\in`

.