Set Union/Examples/Overlapping Integer Sets

Example of Set Union

Let:

\(\ds A\) \(=\) \(\ds \set {x \in \Z: 2 \le x}\)
\(\ds B\) \(=\) \(\ds \set {x \in \Z: x \le 5}\)

Then:

$A \cup B = \Z$


Sources

  • 1965: J.A. Green: Sets and Groups ... (previous) ... (next): Chapter $1$. Sets: Exercise $1$
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