Set Union/Examples/Overlapping Integer Sets

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Example of Set Union

Let:

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

Then:

$A \cup B = \Z$


Sources