Set theory
From Wikimedia Commons, the free media repository
English: Set theory is a branch of Mathematics.
[edit] Subset
A subset A of B is a set A in which all elements are elements of B, too. E.g., A = { 5,17,27 }, B = { 5,6,7,17,21,27 }, then A is a subset of B.
[edit] Operations
Three common set operations.
 Sets - subset A of B |
 Sets - union of A and B |
 Union of A and B |
 Intersection of A and B |
 Intersection of A and B |
 Intersection of A and B |
 Intersection of A,B,N,P. |
 difference (A - B) |
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