Data representation Flashcards
what is a “set”
an disorganized collection of unique elements {finite or infinite}
symbol for “Real Numbers”
R
symbol for “Irrational numbers”
R-Q
symbol for “Rational numbers”
Q
symbol for “Integers”
Z
symbol for “Natural numbers”
N
what are “Ordinal numbers” and what do they describe
Natural numbers that describe the position of values in a set
what is “Enumeration”
letters being used in a set of ordinal numbers
what is a use of “natural numbers”
counting
what is a use of “ordinal numbers”
ordering
which includes all numbers
Real
which includes numbers that cant be expressed as a fraction
Irrational
which numbers include fractions (and integers)
Rational
“Integers” include natural numbers but the opposite isn’t true why
Natural numbers don’t include negatives, as they are an infinite set above zero
Nyquist’s theorem
sample rate must be at least double the highest frequency
