Discrete Structures

Sets to know

Z, Q, R, C

what elements are in set Z and explain (3, examples)

Integers

what elements are in set Q and explain (3, examples)

all rational numbers

what elements are in set R and explain (3, examples)

all real numbers

what elements are in set C and explain (3, examples)

all complex numbers

what is a powerset

a power set is a collection of all subsets of a list including the empty set and the set itself. P(A)= 2^(n) where n is the number of elements in A

Union, Intersection, Difference/Relative Complement of two sets

Irrational Numbers

R-Q

collection of sets/a family of sets.

a set whose elements are sets

A disjoint set

when they have nothing in common (X ∩ Y = ∅)

symmetric difference

A Δ B = (A - B) ∪ (B -A)

universal set

the compliment of a set