Subset Calculator

Set A (proper subset) =
Set B =

Set B is = Set A

Subset definition: Generally speaking, for two sets A and B, if any element in set A is also an element in set B, we say that the two sets have an inclusion relationship, and set A is called a subset of set B.

Recorded as: A⊆B (or B⊇A)

Read as: "A is contained in B" ("B contains A")

A ∪ B = B ∪ A.
A ∪ (B ∪ C) = (A ∪ B) ∪ C.
A ⊆ (A ∪ B).
A ∪ A = A.
A ∪ ∅ = A.
A ⊆ B if and only if A ∪ B = B.