CISC 102 Lecture Notes - Lecture 1: New Zealand, Natural Number, Subset

• School: Queen's University
• Department: Computing
• Course: CISC 102
• Professor: David Rappaport

Document Summary

Can convert most problems into official math notation using sets. Sets are the basic building block of a math problem. Sets are a collection of distinct elements. In notation, a set is defined in between these symbols: {} B= {x| x is an integer, 0 x < 10} C= {x: x is an odd integer, 0 < x < 10} B a (b not a proper subset of a) *{1} is not an element of a, because the set of a is {1,3,5,7,9}, not {1} Sets can have an infinite amount of elements. N = natural numbers: 1, 2, 3, . Z = integers: , -2, -1, 0, 1, 2, . Q= rational numbers: (cid:2869)(cid:2869), (cid:2869)(cid:2870), (cid:2871)(cid:2873), (cid:2869)(cid:2873)(cid:2871)(cid:2872)7 , etc. R= real numbers: 0, 1, 2, (cid:2869)(cid:2870),, 2, etc. C= complex numbers: - uses imaginary numbers (i), which are numbers that can satisfy (cid:2870)= -1.