Documentation

(∈) = member

U+2208, ELEMENT OF

(∋) = flip (∈)

U+220B, CONTAINS AS MEMBER

(∉) = notMember

U+2209, NOT AN ELEMENT OF

(∌) = flip (∉)

U+220C, DOES NOT CONTAIN AS MEMBER

(∅) = empty

U+2205, EMPTY SET

(∪) = union

U+222A, UNION

(∖) = difference

U+2216, SET MINUS

Symmetric difference

a ∆ b = (a ∖ b) ∪ (b ∖ a)

U+2206, INCREMENT

(∩) = intersection

U+2229, INTERSECTION

(⊆) = isSubsetOf

U+2286, SUBSET OF OR EQUAL TO

(⊇) = flip (⊆)

U+2287, SUPERSET OF OR EQUAL TO

a ⊈ b = (a ≢ b) ∧ (a ⊄ b)

U+2288, NEITHER A SUBSET OF NOR EQUAL TO

a ⊉ b = (a ≢ b) ∧ (a ⊅ b)

U+2289, NEITHER A SUPERSET OF NOR EQUAL TO

(⊂) = isProperSubsetOf

U+2282, SUBSET OF

(⊃) = flip (⊂)

U+2283, SUPERSET OF

a ⊄ b = not (a ⊂ b)

U+2284, NOT A SUBSET OF

a ⊅ b = not (a ⊃ b)

U+2285, NOT A SUPERSET OF