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
⊌ ⊍ ⊎

Order

≤ ≦ ⩽ ⫹ ⪕ ⪛
≥ ≧ ⩾ ⫺ ⪖ ⪜

≮ ≰ ⪇ ≨
≯ ≱ ⪈ ≩

precede
≺ ≼ ≾ ⋞ ⪯ ⪳ ⪷ ⪻ ⊰
succeed
≻ ≽ ≿ ⋟ ⪰ ⪴ ⪸ ⪼ ⊱

⊀ ⋠⋨ ⪱ ⪵ ⪹
⊁ ⋡ ⋩ ⪲ ⪶ ⪺

⋜ ⪙ ≶ ≸
⋝ ⪚ ≷ ≹

⋚ ⪋ ⪑ ⪓
⋛ ⪌ ⪒ ⪔

approx
⪅ ⪉
⪆ ⪊

equivalence
≲ ⋦ ≴
≳ ⋧ ≵

similarity
⪝ ⪟ ⪍ ⪏
⪞ ⪠ ⪎ ⪐

⪦ ⪨ ⪪ ⪬ ⪡ ⫷ ≪ ⋘
⪧ ⪩ ⪫ ⪭ ⪢ ⫸ ≫ ⋙

⩹ ⩻
⩺ ⩼

⪣ ⪤ ⪥ ≬

dot
⋖ ⩿ ⪗ ⪁ ⪃
⋗ ⪀ ⪘ ⪂ ⪄

Order with Arrow

⥶ ⥸ , ⥷ ⭃