Set theory
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[edit] Welcome!
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Resource type: this resource is a lesson. |
Welcome! This is a lesson in the Computer Science course Introductory Discrete Mathematics for Computer Science.
[edit] Basic Definition
Intuitively, a set can be thought of as a collection of elements. In a set, the order of the elements is irrelevant, as is the possibility of duplicate elements. For example, we write X = {1,2,3} to denote a set X containing the numbers 1, 2 and 3. Or, X = {1,2,3} = {3,2,1} = {1,1,2,3,3}.
