Copy ∈, the element of symbol, also read belongs to; ∉, ∋ and the rarer forms follow.
Element of Symbol
∈Element ofU+2208Ready to copy
22 membership signs. Tap any value to copy it.
22 membership signs. A character and its name both copy the character. A code copies the code.
Character
Name
Code point
HTML
LaTeX
U+2208. Read is an element of, is a member of, belongs to or is in: 3 ∈ A says that 3 is one of the things in the set A. ∈ in HTML, \in in LaTeX. No Alt code.
U+2209. The sign with a stroke through it: is not an element of, does not belong to. ∉ in HTML, \notin in LaTeX.
U+220B. The sign turned to face left, so that the set comes first: A ∋ x. Unicode also lists the name such that. ∋ in HTML, \ni in LaTeX.
U+220C. The left-facing sign struck through: the set does not hold the thing named after it. ∌ in HTML.
U+220A. A smaller cut of the same sign, kept as a separate character. Unicode traces it to the pi fonts of math typesetting and adds: not the straight epsilon.
Three characters, x then U+2208 then a capital A: the membership statement in its shortest form.
U+22F2. The middle bar runs on to the left, past the curve. ⋲ in HTML.
U+22F3. A short upright closes the end of the middle bar. ⋳ in HTML.
U+22F4. The small cut with the same upright. ⋴ in HTML.
U+22F5. Topped with a single dot. ⋵ in HTML.
U+22F6. Roofed with a bar. Its HTML name is ⋶, though nothing in it is struck out.
U+22F7. The small cut, roofed the same way. ⋷ in HTML.
U+22F8. Standing on a bar. It has no HTML name; it joined Unicode in version 3.2 (2002).
U+22F9. Two middle bars where the plain sign has one. ⋹ in HTML.
U+27D2. Tipped onto its back, so that the opening points up.
U+2AD9. Tipped the other way, with the opening pointing down. ⫙ in HTML.
U+220D. The small cut, facing left.
U+22FA. Left-facing, with its middle bar run on to the right. ⋺ in HTML.
U+22FB. Left-facing, the bar capped by an upright. ⋻ in HTML.
U+22FD. Left-facing, under a roof bar. ⋽ in HTML.
Three characters, x then U+2209 then a capital A: the same statement denied.
U+22FF. A squared, E-shaped sign for membership of a bag in Z notation, as its Unicode name says.
The element of symbol is ∈, U+2208: x ∈ A says that x is a member of the set A, or belongs to it. No Alt code types it; a web page writes ∈ and LaTeX \in.
Read the full guide
How to read it
3 ∈ A is read 3 is an element of A, is a member of A, belongs to A or is in A. The stroke through ∉ makes it not an element of. ∋ is the same sign turned around, with the set first: A ∋ 3. Set theory is one of the topics of discrete math, which writes it the same way.
Typing it
Neither Alt code table has ∈ or ∉, and no key of the U.S. keyboard carries them, so they are characters to copy. A web page writes them ∈ and ∉, LaTeX \in and \notin.
∈ is not the Greek letter epsilon, ε, and not the euro sign, €.
The sign was first used in 1889.
The small ∊ is a separate character, U+220A.
Questions and answers
What does the belongs to symbol mean in math?
∈ says that the thing on its left is one of the things in the set on its right. x ∈ A can be read x belongs to A, x is an element of A or x is a member of A.
What is the symbol for not an element of a set?
∉, U+2209: the element of sign with a stroke through it. A web page writes it ∉ and LaTeX \notin.
What is the Alt code for the element of symbol?
There is none. Neither Alt code table holds ∈, ∉ or ∋, so no Alt code exists for element of, for belongs to or for not element of. They are written by HTML name or copied.
Is the element of sign a character of its own?
Yes. It is a mathematical symbol, U+2208 in the Unicode block Mathematical Operators, and not a letter. The Greek ε and ϵ, the euro sign and the Cyrillic є only look like it.
All 22 membership signs
Start here 6
∋Contains as memberU+220B. The sign turned to face left, so that the set comes first: A ∋ x. Unicode also lists the name such that. ∋ in HTML, \ni in LaTeX.
∌Does not contain as memberU+220C. The left-facing sign struck through: the set does not hold the thing named after it. ∌ in HTML.
∈Element ofU+2208. Read is an element of, is a member of, belongs to or is in: 3 ∈ A says that 3 is one of the things in the set A. ∈ in HTML, \in in LaTeX. No Alt code.
∉Not an element ofU+2209. The sign with a stroke through it: is not an element of, does not belong to. ∉ in HTML, \notin in LaTeX.
∊Small element ofU+220A. A smaller cut of the same sign, kept as a separate character. Unicode traces it to the pi fonts of math typesetting and adds: not the straight epsilon.
x∈Ax is an element of AThree characters, x then U+2208 then a capital A: the membership statement in its shortest form.
Show all 22 membership signs (16 more)
Element of 10
⫙Element of opening downwardsU+2AD9. Tipped the other way, with the opening pointing down. ⫙ in HTML.
⟒Element of opening upwardsU+27D2. Tipped onto its back, so that the opening points up.
⋵Element of with dot aboveU+22F5. Topped with a single dot. ⋵ in HTML.
⋲Element of with long horizontal strokeU+22F2. The middle bar runs on to the left, past the curve. ⋲ in HTML.
⋶Element of with overbarU+22F6. Roofed with a bar. Its HTML name is ⋶, though nothing in it is struck out.
⋹Element of with two horizontal strokesU+22F9. Two middle bars where the plain sign has one. ⋹ in HTML.
⋸Element of with underbarU+22F8. Standing on a bar. It has no HTML name; it joined Unicode in version 3.2 (2002).
⋳Element of with vertical bar at end of horizontal strokeU+22F3. A short upright closes the end of the middle bar. ⋳ in HTML.
⋷Small element of with overbarU+22F7. The small cut, roofed the same way. ⋷ in HTML.
⋴Small element of with vertical bar at end of horizontal strokeU+22F4. The small cut with the same upright. ⋴ in HTML.
Contains as member 4
⋺Contains with long horizontal strokeU+22FA. Left-facing, with its middle bar run on to the right. ⋺ in HTML.
⋽Contains with overbarU+22FD. Left-facing, under a roof bar. ⋽ in HTML.
⋻Contains with vertical bar at end of horizontal strokeU+22FB. Left-facing, the bar capped by an upright. ⋻ in HTML.
∍Small contains as memberU+220D. The small cut, facing left.
Ready-made 1
x∉Ax is not an element of AThree characters, x then U+2209 then a capital A: the same statement denied.
Not the element-of sign 1
⋿Z notation bag membershipU+22FF. A squared, E-shaped sign for membership of a bag in Z notation, as its Unicode name says.