Designate each of the following sets as ordered fields or no
Designate each of the following sets as ordered fields or not. Type F if the given set is an ordered field and type N if it is not.
(the real numbers)
(the rational numbers)
(the complex numbers)
(the natural numbers)
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Solution
R All axioms satisfied Yes
Q Yes
C No (we cannot order complex numbers)
N No since identity 0 is not in N
R-Q No since irrational number does not consist of identity 0
