Set.md (769B)
1 # Set 2 3 U 2.1.1 4 5 **Definition:** A set is an unordered list of elements. 6 7 Common Sets: 8 9 $\N$ - Natural Numbers 10 11 $\mathbb{W}$ - Whole Numbers (0 + Natural Numbers) 12 13 $\Z$ - Integers 14 15 $\mathbb{Q}$ - Rational Numbers ($\frac{a}{b}, b \neq 0$) 16 17 $\R$ - Real numbers (not imaginary) 18 19 $\mathbb{C}$ - Complex numbers (of the form a + bi) 20 21 ## Specifications 22 23 Set specification types: 24 25 1. Roster - list of all members (discrete) 26 2. Set Builder - specify all members by form (discrete or continuous) 27 3. Interval Notation - specify set as [a,b) where a is inclusive and b is exclusive (continuous) 28 29 Inverval notation is best for continuous sets where it is applicable, otherwise we generally use set builder notation unless there is a really small cardinality of the specified set.