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10 Cards in this Set
- Front
- Back
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even integer |
an integer x is even if x=2n for some integer (n) |
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odd integer |
an integer is odd is x=2n+1 for some integer (n) |
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mulitiple |
an integer x is a multiple on n if there exists t in Z such that x=nt |
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divisor |
an integer n is a divisor of x if there exists t in Z such that x=nt |
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contrapositive |
not Q then not P |
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Rational Number |
a real number x is a rational number, if there exist integers a and b, b doesn't equal 0, such that x=a/b |
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irrational number |
a real number x is an irrational number, if it is not a rational number |
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Q |
set of rational numbers |
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Peano's Axioms |
A1) 1 is in N A2) for ever n in N there exist and element n' in N called the successor of N A3) for every n in N, n' does not equal 1 A4) If n'=m' then n=m A5) If S is a subset of N and 1) 1 is in S and 2) n is in S then n' is in S, then S=N |
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subset |
A is a subset of B if every element in set A is in Set B. |
