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Set

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by Honest_Intellect

by Honest_Intellect

Set: A collection of objects, which are called elements or members of the set. The capital letters A, B, C, etc., are commonly used to denote sets.

{ } are used to show the included elements of a set.

For example:

{1, 3, 5, 7}

For example:

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Sets may be described in three different ways:

Roster method: {1, 2, 3, 4} uses commas to delineate elements in the set.

Rule method: {The set of positive integers less than 5}

Set builder notation: {n | n < 5, where n is a positive integer}

Finite set: A set that has a finite number of elements.

Infinite set: A set that has an infinite number of elements.

Special Sets:

Subset: