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8: Some Prerequisite Topics

Last updated

Dec 8, 2024
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- 7.6: Orthogonal Diagonalization
- 8.1: Sets and Set Notation

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The topics presented in this section are important concepts in mathematics and therefore should be examined.

8.1: Sets and Set Notation
A set is a collection of things called elements. For example {1,2,3,8} would be a set consisting of the elements 1,2,3, and 8. To indicate that 3 is an element of {1,2,3,8}, it is customary to write 3∈{1,2,3,8}. We can also indicate when an element is not in a set, by writing 9∉{1,2,3,8} which says that 9 is not an element of {1,2,3,8}. Sometimes a rule specifies a set.
8.2: Well Ordering and Mathematical Induction

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