∈

See also: Appendix:Variations of "e"

∈	U+2208, ∈ ELEMENT OF

← ∇
[U+2207]

Mathematical Operators

∉ →
[U+2209]

∊	U+220A, ∊ SMALL ELEMENT OF

← ∉
[U+2209]

Mathematical Operators

∋ →
[U+220B]

Translingual edit

Etymology edit

From the Ancient Greek letter ϵ (lunate epsilon). The coinage is commonly attributed to Giuseppe Peano, who used the letter epsilon for set membership in his two papers from 1889.^[1]

Symbol edit

∈

(mathematics) Is an element in the set of…
x ∈ ℕ denotes that x is within the set of natural numbers.

Derived terms edit

Related terms

References edit

^ http://jeff560.tripod.com/set.html

[1] ttp://jeff560.tripod.com/set.html

[1]