Calculate Subsets of a Set Online
| Collection A(True subsets ) | = |
| Collection B | = |
| Collection B is | = Collection A |
subsets Definition: Generally ， For both Collection A,B, Collection A arbitrarily one elemental both are Collection B elemental , We these two
Collection inclusionary relationship，Called Collection A isCollection B subsets （subset）。
denote ： A⊆B（ or B⊇A）
read as ：“A included in B”（“B contain 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.