Unicode: Set Theory Symbols ∈ ⊂ ∪ ∩

Common sets theory symbols

ℵ cardinality of infinite sets ℭ continuum

empty set ∅

member ∈ ∉ • ∋ ∌

subset, superset ⊂ ⊆ ⫅ ⊄ ⊈ ⊊ ⫋ • ⊃ ⊇ ⫆ ⊅ ⊉ ⊋ ⫌

⥹ ⥻ • ⥺ ⭄

⫇ ⫉ • ⫈ ⫊

∪ ∩

minus, difference, complement ∖ ∁

Joins ⨝ ⟕ ⟖ ⟗

Misc set theory symbol

⦱ ⦲ ⦳ ⦴ ⦰

⋶ ⋲ ⋳ • ⋽ ⋺ ⋻

∊ ⋷ ⋴ • ∍ ⋾ ⋼

⋵ ⋸ ⋹ ⫙ ⟒

⪽ ⪿ ⫁ • ⪾ ⫀ ⫂

⫃ ⟃ ⫏ ⫑ ⋐ ⟈ • ⫄ ⟄ ⫐ ⫒ ⋑ ⟉

⫗ ⫘ • ⫓ ⫔ ⫕ ⫖

Union ⩁ ⩂ ⩅ ⩌ ⩏ ⋓ ⩊ ⩐ Intersection ⩀ ⩃ ⩄ ⩍ ⩎ ⋒ ⩋

⩆ ⩈ ⩇ ⩉

N-nary operator ⋂ ⋃ ⨅

coproduct, disjoint union ⨃ ⨄ ⨆

multiset ⊌ ⊍ ⊎