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\leftline{Mathematics 242 -- Principles of Analysis}
\leftline{Definitions Quiz 2 -- September 16, 2004}
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\leftline{Your Name: $\underline{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }$}
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\item{1.} What does it mean to say a real number $s$ is
the {\it supremum} (or least upper bound) of a set $A$ of real numbers:
$s = \sup(A)$.
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\item{2.} What is $\sup\left(\{x \in {\bf Q} : x^2 < 3 \}\right)$?
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