Concept
What symbols represent common number sets?
Stephen Davies, Ph.D. Version 2.2.2 Through Discrete Mathematics A Cool Brisk Walk / Chapter 1
"In addition to the empty set, there are symbols for some other common sets, including: • Z — the integers (positive, negative, and zero) • N — the natural numbers (positive integers and zero) • Q — the rational numbers (all numbers that can be expressed as an integer divided by another integer) • R — the real numbers (all numbers that aren’t imaginary, even decimal numbers that aren’t rational)"
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