∁

See also: c and C

∁ U+2201, ∁ COMPLEMENT ← ∀ [U+2200] Mathematical Operators ∂ → [U+2202]

Translingual

Symbol

∁

1. (set theory) Complement (absolute).

   If a universe U is defined, then the complement of a set A is denoted by the following equivalent notations A^C, A′, ∁A, ∁_UA, or U ∖ A.

See also

• ∖